Much cleaner approach that should address code review comments as well

17 files changed, 936 insertions, 958 deletions

diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc
index 25b0149393..b20d8d8c69 100644
--- a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc
+++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc
@@ -352,11 +352,13 @@ class GrpcLb : public LoadBalancingPolicy {
 void* lb_token_copy(void* token) {
   return token == nullptr
              ? nullptr
-             : (void*)GRPC_MDELEM_REF(grpc_mdelem{(uintptr_t)token}).payload;
+             : (void*)GRPC_MDELEM_REF(
+                   (grpc_mdelem{(uintptr_t)token, GRPC_MDINDEX_UNUSED}))
+                   .payload;
 }
 void lb_token_destroy(void* token) {
   if (token != nullptr) {
-    GRPC_MDELEM_UNREF(grpc_mdelem{(uintptr_t)token});
+    GRPC_MDELEM_UNREF((grpc_mdelem{(uintptr_t)token, GRPC_MDINDEX_UNUSED}));
   }
 }
 int lb_token_cmp(void* token1, void* token2) {
diff --git a/src/core/ext/filters/http/server/http_server_filter.cc b/src/core/ext/filters/http/server/http_server_filter.cc
index 1880dbb38d..3919447f26 100644
--- a/src/core/ext/filters/http/server/http_server_filter.cc
+++ b/src/core/ext/filters/http/server/http_server_filter.cc
@@ -322,9 +322,9 @@ static grpc_error* hs_mutate_op(grpc_call_element* elem,
     grpc_error* error = GRPC_ERROR_NONE;
     static const char* error_name = "Failed sending initial metadata";
     hs_add_error(error_name, &error,
-                 grpc_metadata_batch_add_head_static(
+                 grpc_metadata_batch_add_head(
                      op->payload->send_initial_metadata.send_initial_metadata,
-                     &calld->status, GRPC_MDELEM_STATUS_200_INDEX));
+                     &calld->status, GRPC_MDELEM_STATUS_200));
     hs_add_error(error_name, &error,
                  grpc_metadata_batch_add_tail(
                      op->payload->send_initial_metadata.send_initial_metadata,
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.cc b/src/core/ext/transport/chttp2/transport/chttp2_transport.cc
index 9bdad94e82..027a57d606 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.cc
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.cc
@@ -1332,9 +1332,8 @@ static void log_metadata(const grpc_metadata_batch* md_batch, uint32_t id,
                          bool is_client, bool is_initial) {
   for (grpc_linked_mdelem* md = md_batch->list.head; md != nullptr;
        md = md->next) {
-    grpc_mdelem mdelem = grpc_get_md_from_linked_mdelem(md);
-    char* key = grpc_slice_to_c_string(GRPC_MDKEY(mdelem));
-    char* value = grpc_slice_to_c_string(GRPC_MDVALUE(mdelem));
+    char* key = grpc_slice_to_c_string(GRPC_MDKEY(md->md));
+    char* value = grpc_slice_to_c_string(GRPC_MDVALUE(md->md));
     gpr_log(GPR_INFO, "HTTP:%d:%s:%s: %s: %s", id, is_initial ? "HDR" : "TRL",
             is_client ? "CLI" : "SVR", key, value);
     gpr_free(key);
diff --git a/src/core/ext/transport/chttp2/transport/hpack_encoder.cc b/src/core/ext/transport/chttp2/transport/hpack_encoder.cc
index 6674b70152..d0e65ddebd 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_encoder.cc
+++ b/src/core/ext/transport/chttp2/transport/hpack_encoder.cc
@@ -37,7 +37,7 @@
 #include "src/core/lib/debug/stats.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
-#include "src/core/lib/transport/metadata_batch.h"
+#include "src/core/lib/transport/metadata.h"
 #include "src/core/lib/transport/static_metadata.h"
 #include "src/core/lib/transport/timeout_encoding.h"
 
@@ -663,7 +663,7 @@ void grpc_chttp2_hpack_compressor_set_max_table_size(
 }
 
 void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor* c,
-                               grpc_linked_mdelem** extra_headers,
+                               grpc_mdelem** extra_headers,
                                size_t extra_headers_size,
                                grpc_metadata_batch* metadata,
                                const grpc_encode_header_options* options,
@@ -688,17 +688,19 @@ void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor* c,
     emit_advertise_table_size_change(c, &st);
   }
   for (size_t i = 0; i < extra_headers_size; ++i) {
-    grpc_linked_mdelem* linked_md = extra_headers[i];
-    if (grpc_is_mdelem_index_used(linked_md)) {
-      emit_indexed(c, linked_md->md_index, &st);
+    grpc_mdelem md = *extra_headers[i];
+    uint8_t static_index = GRPC_MDINDEX(md);
+    if (static_index > 0) {
+      emit_indexed(c, static_index, &st);
     } else {
-      hpack_enc(c, linked_md->md, &st);
+      hpack_enc(c, md, &st);
     }
   }
   grpc_metadata_batch_assert_ok(metadata);
   for (grpc_linked_mdelem* l = metadata->list.head; l; l = l->next) {
-    if (grpc_is_mdelem_index_used(l)) {
-      emit_indexed(c, l->md_index, &st);
+    uint8_t static_index = GRPC_MDINDEX(l->md);
+    if (static_index > 0) {
+      emit_indexed(c, static_index, &st);
     } else {
       hpack_enc(c, l->md, &st);
     }
diff --git a/src/core/ext/transport/chttp2/transport/hpack_encoder.h b/src/core/ext/transport/chttp2/transport/hpack_encoder.h
index 0994eeb45f..e31a7399d7 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_encoder.h
+++ b/src/core/ext/transport/chttp2/transport/hpack_encoder.h
@@ -87,7 +87,7 @@ typedef struct {
 } grpc_encode_header_options;
 
 void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor* c,
-                               grpc_linked_mdelem** extra_headers,
+                               grpc_mdelem** extra_headers,
                                size_t extra_headers_size,
                                grpc_metadata_batch* metadata,
                                const grpc_encode_header_options* options,
diff --git a/src/core/ext/transport/chttp2/transport/writing.cc b/src/core/ext/transport/chttp2/transport/writing.cc
index 9eabdb4da4..8b73b01dea 100644
--- a/src/core/ext/transport/chttp2/transport/writing.cc
+++ b/src/core/ext/transport/chttp2/transport/writing.cc
@@ -557,12 +557,12 @@ class StreamWriteContext {
     if (s_->send_initial_metadata->idx.named.status != nullptr) {
       extra_headers_for_trailing_metadata_
           [num_extra_headers_for_trailing_metadata_++] =
-              s_->send_initial_metadata->idx.named.status;
+              &s_->send_initial_metadata->idx.named.status->md;
     }
     if (s_->send_initial_metadata->idx.named.content_type != nullptr) {
       extra_headers_for_trailing_metadata_
           [num_extra_headers_for_trailing_metadata_++] =
-              s_->send_initial_metadata->idx.named.content_type;
+              &s_->send_initial_metadata->idx.named.content_type->md;
     }
   }
 
@@ -583,7 +583,7 @@ class StreamWriteContext {
   grpc_chttp2_transport* const t_;
   grpc_chttp2_stream* const s_;
   bool stream_became_writable_ = false;
-  grpc_linked_mdelem* extra_headers_for_trailing_metadata_[2];
+  grpc_mdelem* extra_headers_for_trailing_metadata_[2];
   size_t num_extra_headers_for_trailing_metadata_ = 0;
 };
 }  // namespace
diff --git a/src/core/lib/surface/call.cc b/src/core/lib/surface/call.cc
index a72a3ce57c..2923a86646 100644
--- a/src/core/lib/surface/call.cc
+++ b/src/core/lib/surface/call.cc
@@ -374,7 +374,6 @@ grpc_error* grpc_call_create(const grpc_call_create_args* args,
                MAX_SEND_EXTRA_METADATA_COUNT);
     for (i = 0; i < args->add_initial_metadata_count; i++) {
       call->send_extra_metadata[i].md = args->add_initial_metadata[i];
-      call->send_extra_metadata[i].md_index = 0;
       if (grpc_slice_eq(GRPC_MDKEY(args->add_initial_metadata[i]),
                         GRPC_MDSTR_PATH)) {
         path = grpc_slice_ref_internal(
@@ -955,7 +954,6 @@ static int prepare_application_metadata(grpc_call* call, int count,
     const grpc_metadata* md =
         get_md_elem(metadata, additional_metadata, i, count);
     grpc_linked_mdelem* l = linked_from_md(md);
-    l->md_index = 0;
     GPR_ASSERT(sizeof(grpc_linked_mdelem) == sizeof(md->internal_data));
     if (!GRPC_LOG_IF_ERROR("validate_metadata",
                            grpc_validate_header_key_is_legal(md->key))) {
diff --git a/src/core/lib/transport/metadata.cc b/src/core/lib/transport/metadata.cc
index d10194a2fe..c5458d1d56 100644
--- a/src/core/lib/transport/metadata.cc
+++ b/src/core/lib/transport/metadata.cc
@@ -242,7 +242,8 @@ grpc_mdelem grpc_mdelem_create(
   if (!grpc_slice_is_interned(key) || !grpc_slice_is_interned(value)) {
     if (compatible_external_backing_store != nullptr) {
       return GRPC_MAKE_MDELEM(compatible_external_backing_store,
-                              GRPC_MDELEM_STORAGE_EXTERNAL);
+                              GRPC_MDELEM_STORAGE_EXTERNAL,
+                              GRPC_MDINDEX_UNUSED);
     }
 
     allocated_metadata* allocated =
@@ -261,7 +262,8 @@ grpc_mdelem grpc_mdelem_create(
       gpr_free(value_str);
     }
 #endif
-    return GRPC_MAKE_MDELEM(allocated, GRPC_MDELEM_STORAGE_ALLOCATED);
+    return GRPC_MAKE_MDELEM(allocated, GRPC_MDELEM_STORAGE_ALLOCATED,
+                            GRPC_MDINDEX_UNUSED);
   }
 
   if (GRPC_IS_STATIC_METADATA_STRING(key) &&
@@ -289,7 +291,8 @@ grpc_mdelem grpc_mdelem_create(
     if (grpc_slice_eq(key, md->key) && grpc_slice_eq(value, md->value)) {
       REF_MD_LOCKED(shard, md);
       gpr_mu_unlock(&shard->mu);
-      return GRPC_MAKE_MDELEM(md, GRPC_MDELEM_STORAGE_INTERNED);
+      return GRPC_MAKE_MDELEM(md, GRPC_MDELEM_STORAGE_INTERNED,
+                              GRPC_MDINDEX_UNUSED);
     }
   }
 
@@ -321,7 +324,8 @@ grpc_mdelem grpc_mdelem_create(
 
   gpr_mu_unlock(&shard->mu);
 
-  return GRPC_MAKE_MDELEM(md, GRPC_MDELEM_STORAGE_INTERNED);
+  return GRPC_MAKE_MDELEM(md, GRPC_MDELEM_STORAGE_INTERNED,
+                          GRPC_MDINDEX_UNUSED);
 }
 
 grpc_mdelem grpc_mdelem_from_slices(grpc_slice key, grpc_slice value) {
diff --git a/src/core/lib/transport/metadata.h b/src/core/lib/transport/metadata.h
index 5c34f7323b..513ac826ea 100644
--- a/src/core/lib/transport/metadata.h
+++ b/src/core/lib/transport/metadata.h
@@ -92,9 +92,9 @@ struct grpc_mdelem {
   /* a grpc_mdelem_data* generally, with the two lower bits signalling memory
      ownership as per grpc_mdelem_data_storage */
   uintptr_t payload;
- /* The static index of this mdelem. This is equivalent to the 
-    mdelem's index into the hpack static table. 0 if unused. */
-  uint8_t static_index; 
+  /* The static index of this mdelem. This is equivalent to the
+     mdelem's index into the hpack static table. 0 if unused. */
+  uint8_t static_index;
 };
 
 #define GRPC_MDELEM_DATA(md) ((grpc_mdelem_data*)((md).payload & ~(uintptr_t)3))
@@ -151,8 +151,10 @@ void grpc_mdelem_unref(grpc_mdelem md);
 
 #define GRPC_MDKEY(md) (GRPC_MDELEM_DATA(md)->key)
 #define GRPC_MDVALUE(md) (GRPC_MDELEM_DATA(md)->value)
+#define GRPC_MDINDEX(md) (md.static_index)
+#define GRPC_MDINDEX_UNUSED 0
 
-#define GRPC_MDNULL GRPC_MAKE_MDELEM(NULL, GRPC_MDELEM_STORAGE_EXTERNAL)
+#define GRPC_MDNULL GRPC_MAKE_MDELEM(NULL, GRPC_MDELEM_STORAGE_EXTERNAL, 0)
 #define GRPC_MDISNULL(md) (GRPC_MDELEM_DATA(md) == NULL)
 
 /* We add 32 bytes of padding as per RFC-7540 section 6.5.2. */
@@ -165,190 +167,4 @@ void grpc_mdelem_unref(grpc_mdelem md);
 void grpc_mdctx_global_init(void);
 void grpc_mdctx_global_shutdown();
 
-#define MIN_STATIC_HPACK_TABLE_IDX 1
-#define MAX_STATIC_HPACK_TABLE_IDX 61
-
-/* {:authority, ""} */
-#define GRPC_MDELEM_AUTHORITY_EMPTY_INDEX 1
-
-/* {":method", "GET"} */
-#define GRPC_MDELEM_METHOD_GET_INDEX 2
-
-/* {":method", "POST"} */
-#define GRPC_MDELEM_METHOD_POST_INDEX 3
-
-/* {":path", "/"} */
-#define GRPC_MDELEM_PATH_SLASH_INDEX 4
-
-/* {":path", "/index.html"} */
-#define GRPC_MDELEM_PATH_SLASH_INDEX_DOT_HTML_INDEX 5
-
-/* {":scheme", "http"} */
-#define GRPC_MDELEM_SCHEME_HTTP_INDEX 6
-
-/* {":scheme", "https"} */
-#define GRPC_MDELEM_SCHEME_HTTPS_INDEX 7
-
-/* {":status", "200"} */
-#define GRPC_MDELEM_STATUS_200_INDEX 8
-
-/* {":status", "204"} */
-#define GRPC_MDELEM_STATUS_204_INDEX 9
-
-/* {":status", "206"} */
-#define GRPC_MDELEM_STATUS_206_INDEX 10
-
-/* {":status", "304"} */
-#define GRPC_MDELEM_STATUS_304_INDEX 11
-
-/* {":status", "400"} */
-#define GRPC_MDELEM_STATUS_400_INDEX 12
-
-/* {":status", "404"} */
-#define GRPC_MDELEM_STATUS_404_INDEX 13
-
-/* {":status", "500"} */
-#define GRPC_MDELEM_STATUS_500_INDEX 14
-
-/* {"accept-charset", ""} */
-#define GRPC_MDELEM_ACCEPT_CHARSET_EMPTY_INDEX 15
-
-/* {"accept-encoding", "gzip, deflate"} */
-#define GRPC_MDELEM_ACCEPT_ENCODING_GZIP_DEFLATE_INDEX 16
-
-/* {"accept-language", ""} */
-#define GRPC_MDELEM_MDELEM_ACCEPT_LANGUAGE_EMPTY_INDEX 17
-
-/* {"accept-ranges", ""} */
-#define GRPC_MDELEM_MDELEM_ACCEPT_RANGES_EMPTY_INDEX 18
-
-/* {"accept", ""} */
-#define GRPC_MDELEM_ACCEPT_EMPTY_INDEX 19
-
-/* {"access-control-allow-origin", ""} */
-#define GRPC_MDELEM_ACCESS_CONTROL_ALLOW_ORIGIN_EMPTY_INDEX 20
-
-/* {"age", ""} */
-#define GRPC_MDELEM_AGE_EMPTY_INDEX 21
-
-/* {"allow", ""} */
-#define GRPC_MDELEM_ALLOW_EMPTY_INDEX 22
-
-/* {"authorization", ""} */
-#define GRPC_MDELEM_AUTHORIZATION_EMPTY_INDEX 23
-
-/* {"cache-control", ""} */
-#define GRPC_MDELEM_CACHE_CONTROL_EMPTY_INDEX 24
-
-/* {"content-disposition", ""} */
-#define GRPC_MDELEM_CONTENT_DISPOSITION_EMPTY_INDEX 25
-
-/* {"content-encoding", ""} */
-#define GRPC_MDELEM_CONTENT_ENCODING_EMPTY_INDEX 26
-
-/* {"content-language", ""} */
-#define GRPC_MDELEM_CONTENT_LANGUAGE_EMPTY_INDEX 27
-
-/* {"content-length", ""} */
-#define GRPC_MDELEM_CONTENT_LENGTH_EMPTY_INDEX 28
-
-/* {"content-location", ""} */
-#define GRPC_MDELEM_CONTENT_LOCATION_EMPTY_INDEX 29
-
-/* {"content-range", ""} */
-#define GRPC_MDELEM_CONTENT_RANGE_EMPTY_INDEX 30
-
-/* {"content-type", ""} */
-#define GRPC_MDELEM_CONTENT_TYPE_EMPTY_INDEX 31
-
-/* {"cookie", ""} */
-#define GRPC_MDELEM_COOKIE_EMPTY_INDEX 32
-
-/* {"date", ""} */
-#define GRPC_MDELEM_DATE_EMPTY_INDEX 33
-
-/* {"etag", ""} */
-#define GRPC_MDELEM_ETAG_EMPTY_INDEX 34
-
-/* {"expect", ""} */
-#define GRPC_MDELEM_EXPECT_EMPTY_INDEX 35
-
-/* {"expires", ""} */
-#define GRPC_MDELEM_EXPIRES_EMPTY_INDEX 36
-
-/* {"from", ""} */
-#define GRPC_MDELEM_FROM_EMPTY_INDEX 37
-
-/* {"host", ""} */
-#define GRPC_MDELEM_HOST_EMPTY_INDEX 38
-
-/* {"if-match", ""} */
-#define GRPC_MDELEM_IF_MATCH_EMPTY_INDEX 39
-
-/* {"if-modified-since", ""} */
-#define GRPC_MDELEM_IF_MODIFIED_SINCE_EMPTY_INDEX 40
-
-/* {"if-none-match", ""} */
-#define GRPC_MDELEM_IF_NONE_MATCH_EMPTY_INDEX 41
-
-/* {"if-range", ""} */
-#define GRPC_MDELEM_IF_RANGE_EMPTY_INDEX 42
-
-/* {"if-unmodified-since", ""} */
-#define GRPC_MDELEM_IF_UNMODIFIED_SINCE_EMPTY_INDEX 43
-
-/* {"last-modified", ""} */
-#define GRPC_MDELEM_LAST_MODIFIED_EMPTY_INDEX 44
-
-/* {"link", ""} */
-#define GRPC_MDELEM_LINK_EMPTY_INDEX 45
-
-/* {"location", ""} */
-#define GRPC_MDELEM_LOCATION_EMPTY_INDEX 46
-
-/* {"max-forwards", ""} */
-#define GRPC_MDELEM_MAX_FORWARDS_EMPTY_INDEX 47
-
-/* {"proxy-authenticate", ""} */
-#define GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY_INDEX 48
-
-/* {"proxy-authorization", ""} */
-#define GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY_INDEX 49
-
-/* {"range", ""} */
-#define GRPC_MDELEM_RANGE_EMPTY_INDEX 50
-
-/* {"referer", ""} */
-#define GRPC_MDELEM_REFERER_EMPTY_INDEX 51
-
-/* {"refresh", ""} */
-#define GRPC_MDELEM_REFRESH_EMPTY_INDEX 52
-
-/* {"retry-after", ""} */
-#define GRPC_MDELEM_RETRY_AFTER_EMPTY_INDEX 53
-
-/* {"server", ""} */
-#define GRPC_MDELEM_SERVER_EMPTY_INDEX 54
-
-/* {"set-cookie", ""} */
-#define GRPC_MDELEM_SET_COOKIE_EMPTY_INDEX 55 * /
-
-/* {"strict-transport-security", ""} */
-#define GRPC_MDELEM_STRICT_TRANSPORT_SECURITY_EMPTY_INDEX 56
-
-/* {"transfer-encoding", ""} */
-#define GRPC_MDELEM_TRANSFER_ENCODING_EMPTY_INDEX 57
-
-/* {"user-agent", ""} */
-#define GRPC_MDELEM_USER_AGENT_EMPTY_INDEX 58
-
-/* {"vary", ""} */
-#define GRPC_MDELEM_VARY_EMPTY_INDEX 59
-
-/* {"via", ""} */
-#define GRPC_MDELEM_VIA_EMPTY_INDEX 60
-
-/* {"www-authenticate", ""} */
-#define GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY_INDEX 61
-
 #endif /* GRPC_CORE_LIB_TRANSPORT_METADATA_H */
diff --git a/src/core/lib/transport/metadata_batch.cc b/src/core/lib/transport/metadata_batch.cc
index 05f7a29e8a..b7ab4cc7b9 100644
--- a/src/core/lib/transport/metadata_batch.cc
+++ b/src/core/lib/transport/metadata_batch.cc
@@ -25,103 +25,11 @@
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include <grpc/support/string_util.h>
 
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 
-static_hpack_table_metadata_info static_hpack_table_metadata[] = {
-    {0, 0, GRPC_BATCH_CALLOUTS_COUNT},  // NOT USED
-    {GRPC_MDELEM_AUTHORITY_EMPTY_INDEX, 10 + 32, GRPC_BATCH_AUTHORITY},
-    {GRPC_MDELEM_METHOD_GET_INDEX, 10 + 32, GRPC_BATCH_METHOD},
-    {GRPC_MDELEM_METHOD_POST_INDEX, 11 + 32, GRPC_BATCH_METHOD},
-    {GRPC_MDELEM_PATH_SLASH_INDEX, 6 + 32, GRPC_BATCH_PATH},
-    {GRPC_MDELEM_PATH_SLASH_INDEX_DOT_HTML_INDEX, 16 + 32, GRPC_BATCH_PATH},
-    {GRPC_MDELEM_SCHEME_HTTP_INDEX, 11 + 32, GRPC_BATCH_SCHEME},
-    {GRPC_MDELEM_SCHEME_HTTPS_INDEX, 12 + 32, GRPC_BATCH_SCHEME},
-    {GRPC_MDELEM_STATUS_200_INDEX, 10 + 32, GRPC_BATCH_STATUS},
-    {GRPC_MDELEM_STATUS_204_INDEX, 10 + 32, GRPC_BATCH_STATUS},
-    {GRPC_MDELEM_STATUS_206_INDEX, 10 + 32, GRPC_BATCH_STATUS},
-    {GRPC_MDELEM_STATUS_304_INDEX, 10 + 32, GRPC_BATCH_STATUS},
-    {GRPC_MDELEM_STATUS_400_INDEX, 10 + 32, GRPC_BATCH_STATUS},
-    {GRPC_MDELEM_STATUS_404_INDEX, 10 + 32, GRPC_BATCH_STATUS},
-    {GRPC_MDELEM_STATUS_500_INDEX, 10 + 32, GRPC_BATCH_STATUS},
-    {GRPC_MDELEM_ACCEPT_CHARSET_EMPTY_INDEX, 14 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_ACCEPT_ENCODING_GZIP_DEFLATE_INDEX, 28 + 32,
-     GRPC_BATCH_ACCEPT_ENCODING},
-    {GRPC_MDELEM_MDELEM_ACCEPT_LANGUAGE_EMPTY_INDEX, 15 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_MDELEM_ACCEPT_RANGES_EMPTY_INDEX, 13 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_ACCEPT_EMPTY_INDEX, 6 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_ACCESS_CONTROL_ALLOW_ORIGIN_EMPTY_INDEX, 27 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_AGE_EMPTY_INDEX, 3 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_ALLOW_EMPTY_INDEX, 5 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_AUTHORIZATION_EMPTY_INDEX, 13 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_CACHE_CONTROL_EMPTY_INDEX, 13 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_CONTENT_DISPOSITION_EMPTY_INDEX, 19 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_CONTENT_ENCODING_EMPTY_INDEX, 16 + 32,
-     GRPC_BATCH_CONTENT_ENCODING},
-    {GRPC_MDELEM_CONTENT_LANGUAGE_EMPTY_INDEX, 16 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_CONTENT_LENGTH_EMPTY_INDEX, 14 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_CONTENT_LOCATION_EMPTY_INDEX, 16 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_CONTENT_RANGE_EMPTY_INDEX, 13 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_CONTENT_TYPE_EMPTY_INDEX, 12 + 32, GRPC_BATCH_CONTENT_TYPE},
-    {GRPC_MDELEM_COOKIE_EMPTY_INDEX, 6 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_DATE_EMPTY_INDEX, 4 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_ETAG_EMPTY_INDEX, 4 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_EXPECT_EMPTY_INDEX, 6 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_EXPIRES_EMPTY_INDEX, 7 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_FROM_EMPTY_INDEX, 4 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_HOST_EMPTY_INDEX, 4 + 32, GRPC_BATCH_HOST},
-    {GRPC_MDELEM_IF_MATCH_EMPTY_INDEX, 8 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_IF_MODIFIED_SINCE_EMPTY_INDEX, 17 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_IF_NONE_MATCH_EMPTY_INDEX, 13 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_IF_RANGE_EMPTY_INDEX, 8 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_IF_UNMODIFIED_SINCE_EMPTY_INDEX, 19 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_LAST_MODIFIED_EMPTY_INDEX, 13 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_LINK_EMPTY_INDEX, 4 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_LOCATION_EMPTY_INDEX, 8 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_MAX_FORWARDS_EMPTY_INDEX, 12 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY_INDEX, 18 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY_INDEX, 19 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_RANGE_EMPTY_INDEX, 5 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_REFERER_EMPTY_INDEX, 7 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_REFRESH_EMPTY_INDEX, 7 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_RETRY_AFTER_EMPTY_INDEX, 11 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_SERVER_EMPTY_INDEX, 6 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_COOKIE_EMPTY_INDEX, 10 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_STRICT_TRANSPORT_SECURITY_EMPTY_INDEX, 25 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_TRANSFER_ENCODING_EMPTY_INDEX, 17 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_USER_AGENT_EMPTY_INDEX, 10 + 32, GRPC_BATCH_USER_AGENT},
-    {GRPC_MDELEM_VARY_EMPTY_INDEX, 4 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_VIA_EMPTY_INDEX, 3 + 32, GRPC_BATCH_CALLOUTS_COUNT},
-    {GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY_INDEX, 16 + 32,
-     GRPC_BATCH_CALLOUTS_COUNT},
-};
-
-/* This is a faster check for seeing if a mdelem index is used or not. To verify
-   that the index value is valid, use 'grpc_metadata_batch_is_valid_mdelem_index' */
-static bool is_mdelem_index_used(uint8_t index);
-
-static void set_mdelem_index_unused(uint8_t* index);
-
-static grpc_metadata_batch_callouts_index get_callouts_index(
-    grpc_linked_mdelem* storage);
-
 static void assert_valid_list(grpc_mdelem_list* list) {
 #ifndef NDEBUG
   grpc_linked_mdelem* l;
@@ -134,7 +42,7 @@ static void assert_valid_list(grpc_mdelem_list* list) {
 
   size_t verified_count = 0;
   for (l = list->head; l; l = l->next) {
-    GPR_ASSERT(is_mdelem_index_used(l->md_index) || !GRPC_MDISNULL(l->md));
+    GPR_ASSERT(!GRPC_MDISNULL(l->md));
     GPR_ASSERT((l->prev == nullptr) == (l == list->head));
     GPR_ASSERT((l->next == nullptr) == (l == list->tail));
     if (l->next) GPR_ASSERT(l->next->prev == l);
@@ -148,21 +56,13 @@ static void assert_valid_list(grpc_mdelem_list* list) {
 static void assert_valid_callouts(grpc_metadata_batch* batch) {
 #ifndef NDEBUG
   for (grpc_linked_mdelem* l = batch->list.head; l != nullptr; l = l->next) {
-    grpc_metadata_batch_callouts_index callout_idx;
-    if (is_mdelem_index_used(l->md_index)) {
-      GPR_ASSERT(grpc_metadata_batch_is_valid_mdelem_index(l->md_index));
-      callout_idx = get_callouts_index(l);
-      if (callout_idx != GRPC_BATCH_CALLOUTS_COUNT) {
-        GPR_ASSERT(batch->idx.array[callout_idx] == l);
-      }
-    } else {
-      grpc_slice key_interned = grpc_slice_intern(GRPC_MDKEY(l->md));
-      callout_idx = GRPC_BATCH_INDEX_OF(key_interned);
-      if (callout_idx != GRPC_BATCH_CALLOUTS_COUNT) {
-        GPR_ASSERT(batch->idx.array[callout_idx] == l);
-      }
-      grpc_slice_unref_internal(key_interned);
+    grpc_slice key_interned = grpc_slice_intern(GRPC_MDKEY(l->md));
+    grpc_metadata_batch_callouts_index callout_idx =
+        GRPC_BATCH_INDEX_OF(key_interned);
+    if (callout_idx != GRPC_BATCH_CALLOUTS_COUNT) {
+      GPR_ASSERT(batch->idx.array[callout_idx] == l);
     }
+    grpc_slice_unref_internal(key_interned);
   }
 #endif
 }
@@ -181,9 +81,7 @@ void grpc_metadata_batch_init(grpc_metadata_batch* batch) {
 void grpc_metadata_batch_destroy(grpc_metadata_batch* batch) {
   grpc_linked_mdelem* l;
   for (l = batch->list.head; l; l = l->next) {
-    if (!is_mdelem_index_used(l->md_index)) {
-      GRPC_MDELEM_UNREF(l->md);
-    }
+    GRPC_MDELEM_UNREF(l->md);
   }
 }
 
@@ -195,22 +93,14 @@ grpc_error* grpc_attach_md_to_error(grpc_error* src, grpc_mdelem md) {
   return out;
 }
 
-static grpc_metadata_batch_callouts_index get_callouts_index(
-    grpc_linked_mdelem* storage) {
-  if (is_mdelem_index_used(storage->md_index)) {
-    return static_hpack_table_metadata[storage->md_index].callouts_index;
-  } else {
-    return GRPC_BATCH_INDEX_OF(GRPC_MDKEY(storage->md));
-  }
-}
-
 static grpc_error* maybe_link_callout(grpc_metadata_batch* batch,
                                       grpc_linked_mdelem* storage)
     GRPC_MUST_USE_RESULT;
 
 static grpc_error* maybe_link_callout(grpc_metadata_batch* batch,
                                       grpc_linked_mdelem* storage) {
-  grpc_metadata_batch_callouts_index idx = get_callouts_index(storage);
+  grpc_metadata_batch_callouts_index idx =
+      GRPC_BATCH_INDEX_OF(GRPC_MDKEY(storage->md));
   if (idx == GRPC_BATCH_CALLOUTS_COUNT) {
     return GRPC_ERROR_NONE;
   }
@@ -219,26 +109,16 @@ static grpc_error* maybe_link_callout(grpc_metadata_batch* batch,
     batch->idx.array[idx] = storage;
     return GRPC_ERROR_NONE;
   }
-  grpc_error* err;
-  if (is_mdelem_index_used(storage->md_index)) {
-    char* message;
-    gpr_asprintf(&message,
-                 "Unallowed duplicate metadata with static hpack table index "
-                 "%d and callouts index %d",
-                 storage->md_index, idx);
-    err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(message);
-    gpr_free(message);
-  } else {
-    err = grpc_attach_md_to_error(
-        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Unallowed duplicate metadata"),
-        storage->md);
-  }
-  return err;
+
+  return grpc_attach_md_to_error(
+      GRPC_ERROR_CREATE_FROM_STATIC_STRING("Unallowed duplicate metadata"),
+      storage->md);
 }
 
 static void maybe_unlink_callout(grpc_metadata_batch* batch,
                                  grpc_linked_mdelem* storage) {
-  grpc_metadata_batch_callouts_index idx = get_callouts_index(storage);
+  grpc_metadata_batch_callouts_index idx =
+      GRPC_BATCH_INDEX_OF(GRPC_MDKEY(storage->md));
   if (idx == GRPC_BATCH_CALLOUTS_COUNT) {
     return;
   }
@@ -247,39 +127,17 @@ static void maybe_unlink_callout(grpc_metadata_batch* batch,
   batch->idx.array[idx] = nullptr;
 }
 
-bool grpc_metadata_batch_is_valid_mdelem_index(uint8_t index) {
-  return index >= MIN_STATIC_HPACK_TABLE_IDX &&
-         index <= MAX_STATIC_HPACK_TABLE_IDX;
-}
-
-static bool is_mdelem_index_used(uint8_t index) { return index != 0; }
-
-static void set_mdelem_index_unused(uint8_t* index) {
-  GPR_ASSERT(index != nullptr);
-  *index = 0;
-}
-
 grpc_error* grpc_metadata_batch_add_head(grpc_metadata_batch* batch,
                                          grpc_linked_mdelem* storage,
                                          grpc_mdelem elem_to_add) {
   GPR_ASSERT(!GRPC_MDISNULL(elem_to_add));
-  storage->md_index = 0;
   storage->md = elem_to_add;
   return grpc_metadata_batch_link_head(batch, storage);
 }
 
-grpc_error* grpc_metadata_batch_add_head_static(grpc_metadata_batch* batch,
-                                               grpc_linked_mdelem* storage,
-                                               uint8_t index_to_add) {
-  GPR_ASSERT(grpc_metadata_batch_is_valid_mdelem_index(index_to_add));
-  storage->md_index = index_to_add;
-  return grpc_metadata_batch_link_head(batch, storage);
-}
-
 static void link_head(grpc_mdelem_list* list, grpc_linked_mdelem* storage) {
   assert_valid_list(list);
-  GPR_ASSERT(grpc_metadata_batch_is_valid_mdelem_index(storage->md_index) ||
-             !GRPC_MDISNULL(storage->md));
+  GPR_ASSERT(!GRPC_MDISNULL(storage->md));
   storage->prev = nullptr;
   storage->next = list->head;
   if (list->head != nullptr) {
@@ -310,22 +168,12 @@ grpc_error* grpc_metadata_batch_add_tail(grpc_metadata_batch* batch,
                                          grpc_mdelem elem_to_add) {
   GPR_ASSERT(!GRPC_MDISNULL(elem_to_add));
   storage->md = elem_to_add;
-  storage->md_index = 0;
-  return grpc_metadata_batch_link_tail(batch, storage);
-}
-
-grpc_error* grpc_metadata_batch_add_tail_static(grpc_metadata_batch* batch,
-                                               grpc_linked_mdelem* storage,
-                                               uint8_t index_to_add) {
-  GPR_ASSERT(grpc_metadata_batch_is_valid_mdelem_index(index_to_add));
-  storage->md_index = index_to_add;
   return grpc_metadata_batch_link_tail(batch, storage);
 }
 
 static void link_tail(grpc_mdelem_list* list, grpc_linked_mdelem* storage) {
   assert_valid_list(list);
-  GPR_ASSERT(grpc_metadata_batch_is_valid_mdelem_index(storage->md_index) ||
-             !GRPC_MDISNULL(storage->md));
+  GPR_ASSERT(!GRPC_MDISNULL(storage->md));
   storage->prev = list->tail;
   storage->next = nullptr;
   storage->reserved = nullptr;
@@ -374,15 +222,12 @@ void grpc_metadata_batch_remove(grpc_metadata_batch* batch,
   assert_valid_callouts(batch);
   maybe_unlink_callout(batch, storage);
   unlink_storage(&batch->list, storage);
-  if (!is_mdelem_index_used(storage->md_index)) {
-    GRPC_MDELEM_UNREF(storage->md);
-  }
+  GRPC_MDELEM_UNREF(storage->md);
   assert_valid_callouts(batch);
 }
 
 void grpc_metadata_batch_set_value(grpc_linked_mdelem* storage,
                                    grpc_slice value) {
-  set_mdelem_index_unused(&storage->md_index);
   grpc_mdelem old_mdelem = storage->md;
   grpc_mdelem new_mdelem = grpc_mdelem_from_slices(
       grpc_slice_ref_internal(GRPC_MDKEY(old_mdelem)), value);
@@ -396,26 +241,18 @@ grpc_error* grpc_metadata_batch_substitute(grpc_metadata_batch* batch,
   assert_valid_callouts(batch);
   grpc_error* error = GRPC_ERROR_NONE;
   grpc_mdelem old_mdelem = storage->md;
-  bool is_index_used = is_mdelem_index_used(storage->md_index);
-  if (is_index_used ||
-      !grpc_slice_eq(GRPC_MDKEY(new_mdelem), GRPC_MDKEY(old_mdelem))) {
+  if (!grpc_slice_eq(GRPC_MDKEY(new_mdelem), GRPC_MDKEY(old_mdelem))) {
     maybe_unlink_callout(batch, storage);
     storage->md = new_mdelem;
-    set_mdelem_index_unused(&storage->md_index);
     error = maybe_link_callout(batch, storage);
     if (error != GRPC_ERROR_NONE) {
       unlink_storage(&batch->list, storage);
-      if (!is_index_used) {
-        GRPC_MDELEM_UNREF(storage->md);
-      }
+      GRPC_MDELEM_UNREF(storage->md);
     }
   } else {
     storage->md = new_mdelem;
   }
-
-  if (!is_index_used) {
-    GRPC_MDELEM_UNREF(old_mdelem);
-  }
+  GRPC_MDELEM_UNREF(old_mdelem);
   assert_valid_callouts(batch);
   return error;
 }
@@ -434,11 +271,7 @@ size_t grpc_metadata_batch_size(grpc_metadata_batch* batch) {
   size_t size = 0;
   for (grpc_linked_mdelem* elem = batch->list.head; elem != nullptr;
        elem = elem->next) {
-    if (!is_mdelem_index_used(elem->md_index)) {
-      size += GRPC_MDELEM_LENGTH(elem->md);
-    } else {  // Mdelem is represented by static hpack table index
-      size += static_hpack_table_metadata[elem->md_index].size;
-    }
+    size += GRPC_MDELEM_LENGTH(elem->md);
   }
   return size;
 }
@@ -460,15 +293,12 @@ grpc_error* grpc_metadata_batch_filter(grpc_metadata_batch* batch,
   grpc_error* error = GRPC_ERROR_NONE;
   while (l) {
     grpc_linked_mdelem* next = l->next;
-    // TODO(hcaseyal): provide a mechanism to filter mdelems with indices
-    if (!is_mdelem_index_used(l->md_index)) {
-      grpc_filtered_mdelem new_mdelem = func(user_data, l->md);
-      add_error(&error, new_mdelem.error, composite_error_string);
-      if (GRPC_MDISNULL(new_mdelem.md)) {
-        grpc_metadata_batch_remove(batch, l);
-      } else if (new_mdelem.md.payload != l->md.payload) {
-        grpc_metadata_batch_substitute(batch, l, new_mdelem.md);
-      }
+    grpc_filtered_mdelem new_mdelem = func(user_data, l->md);
+    add_error(&error, new_mdelem.error, composite_error_string);
+    if (GRPC_MDISNULL(new_mdelem.md)) {
+      grpc_metadata_batch_remove(batch, l);
+    } else if (new_mdelem.md.payload != l->md.payload) {
+      grpc_metadata_batch_substitute(batch, l, new_mdelem.md);
     }
     l = next;
   }
@@ -483,14 +313,8 @@ void grpc_metadata_batch_copy(grpc_metadata_batch* src,
   size_t i = 0;
   for (grpc_linked_mdelem* elem = src->list.head; elem != nullptr;
        elem = elem->next) {
-    grpc_error* error = nullptr;
-    if (is_mdelem_index_used(elem->md_index)) {
-      error = grpc_metadata_batch_add_tail_static(dst, &storage[i++],
-                                                 elem->md_index);
-    } else {
-      error = grpc_metadata_batch_add_tail(dst, &storage[i++],
-                                           GRPC_MDELEM_REF(elem->md));
-    }
+    grpc_error* error = grpc_metadata_batch_add_tail(dst, &storage[i++],
+                                                     GRPC_MDELEM_REF(elem->md));
     // The only way that grpc_metadata_batch_add_tail() can fail is if
     // there's a duplicate entry for a callout.  However, that can't be
     // the case here, because we would not have been allowed to create
diff --git a/src/core/lib/transport/metadata_batch.h b/src/core/lib/transport/metadata_batch.h
index c0450684bb..0bcbb32d1f 100644
--- a/src/core/lib/transport/metadata_batch.h
+++ b/src/core/lib/transport/metadata_batch.h
@@ -30,16 +30,8 @@
 #include "src/core/lib/transport/metadata.h"
 #include "src/core/lib/transport/static_metadata.h"
 
-/** Each grpc_linked_mdelem refers to a particular metadata element by either:
-    1) grpc_mdelem md
-    2) uint8_t md_index
-    md_index is an optional optimization. It can only be used for metadata in
-    the hpack static table and is equivalent to the metadata's index in the
-    table. If a metadata elem is not contained in the hpack static table, then
-    md must be used instead. */
 typedef struct grpc_linked_mdelem {
-  uint8_t md_index;  // If 0, not used. Else, use this field instead of md.
-  grpc_mdelem md;    // If md_index is 0, use this field instead of md_index.
+  grpc_mdelem md;
   struct grpc_linked_mdelem* next;
   struct grpc_linked_mdelem* prev;
   void* reserved;
@@ -58,7 +50,7 @@ typedef struct grpc_metadata_batch {
   grpc_metadata_batch_callouts idx;
   /** Used to calculate grpc-timeout at the point of sending,
       or GRPC_MILLIS_INF_FUTURE if this batch does not need to send a
-      grpc-timeout. */
+      grpc-timeout */
   grpc_millis deadline;
 } grpc_metadata_batch;
 
@@ -110,18 +102,6 @@ grpc_error* grpc_metadata_batch_add_head(
     grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
     grpc_mdelem elem_to_add) GRPC_MUST_USE_RESULT;
 
-/** Add the static metadata element associated with \a elem_to_add_index
-    as the first element in \a batch, using \a storage as backing storage for 
-    the linked list element. \a storage is owned by the caller and must survive 
-    for the lifetime of batch. This usually means it should be around
-    for the lifetime of the call. 
-    Valid indices are in metadata.h (e.g., GRPC_MDELEM_STATUS_200_INDEX).
-    This is an optimization in the case where chttp2 is used as the underlying 
-    transport. */
-grpc_error* grpc_metadata_batch_add_head_static(
-    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
-    uint8_t elem_to_add_index) GRPC_MUST_USE_RESULT;
-
 /** Add \a elem_to_add as the last element in \a batch, using
     \a storage as backing storage for the linked list element.
     \a storage is owned by the caller and must survive for the
@@ -132,37 +112,8 @@ grpc_error* grpc_metadata_batch_add_tail(
     grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
     grpc_mdelem elem_to_add) GRPC_MUST_USE_RESULT;
 
-/** Add the static metadata element associated with \a elem_to_add_index
-    as the last element in \a batch, using \a storage as backing storage for 
-    the linked list element. \a storage is owned by the caller and must survive 
-    for the lifetime of batch. This usually means it should be around
-    for the lifetime of the call. 
-    Valid indices are in metadata.h (e.g., GRPC_MDELEM_STATUS_200_INDEX).
-    This is an optimization in the case where chttp2 is used as the underlying 
-    transport. */
-grpc_error* grpc_metadata_batch_add_tail_static(
-    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
-    uint8_t index_to_add) GRPC_MUST_USE_RESULT;
-
 grpc_error* grpc_attach_md_to_error(grpc_error* src, grpc_mdelem md);
 
-/** Returns if the index is a valid static hpack table index, and thus if the
-    grpc_linked_mdelem stores the index rather than the actual grpc_mdelem **/
-bool grpc_metadata_batch_is_valid_mdelem_index(uint8_t index);
-
-/* Static hpack table metadata info */
-typedef struct static_hpack_table_metadata_info {
-  uint8_t index;  // Index in the static hpack table
-  uint8_t size;   // Size of the metadata per RFC-7540 section 6.5.2., including
-                  // 32 bytes of padding
-  grpc_metadata_batch_callouts_index
-      callouts_index;  // For duplicate metadata detection. If
-                       // GRPC_BATCH_CALLOUTS_COUNT, then the metadata is not
-                       // one of the callouts.
-} static_hpack_table_metadata_info;
-
-extern static_hpack_table_metadata_info static_hpack_table_metadata[];
-
 typedef struct {
   grpc_error* error;
   grpc_mdelem md;
diff --git a/src/core/lib/transport/static_metadata.cc b/src/core/lib/transport/static_metadata.cc
index b4f8fac3d6..259aa187f7 100644
--- a/src/core/lib/transport/static_metadata.cc
+++ b/src/core/lib/transport/static_metadata.cc
@@ -1,12 +1,12 @@
 /*
  * Copyright 2015 gRPC authors.
- * 
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *     http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -16,10 +16,10 @@
 
 /*
  * WARNING: Auto-generated code.
- * 
+ *
  * To make changes to this file, change
  * tools/codegen/core/gen_static_metadata.py, and then re-run it.
- * 
+ *
  * See metadata.h for an explanation of the interface here, and metadata.cc for
  * an explanation of what's going on.
  */
@@ -28,235 +28,323 @@
 
 #include "src/core/lib/slice/slice_internal.h"
 
-static uint8_t g_bytes[] = {58,112,97,116,104,58,109,101,116,104,111,100,58,115,116,97,116,117,115,58,97,117,116,104,111,114,105,116,121,58,115,99,104,101,109,101,116,101,103,114,112,99,45,109,101,115,115,97,103,101,103,114,112,99,45,115,116,97,116,117,115,103,114,112,99,45,112,97,121,108,111,97,100,45,98,105,110,103,114,112,99,45,101,110,99,111,100,105,110,103,103,114,112,99,45,97,99,99,101,112,116,45,101,110,99,111,100,105,110,103,103,114,112,99,45,115,101,114,118,101,114,45,115,116,97,116,115,45,98,105,110,103,114,112,99,45,116,97,103,115,45,98,105,110,103,114,112,99,45,116,114,97,99,101,45,98,105,110,99,111,110,116,101,110,116,45,116,121,112,101,99,111,110,116,101,110,116,45,101,110,99,111,100,105,110,103,97,99,99,101,112,116,45,101,110,99,111,100,105,110,103,103,114,112,99,45,105,110,116,101,114,110,97,108,45,101,110,99,111,100,105,110,103,45,114,101,113,117,101,115,116,103,114,112,99,45,105,110,116,101,114,110,97,108,45,115,116,114,101,97,109,45,101,110,99,111,100,105,110,103,45,114,101,113,117,101,115,116,117,115,101,114,45,97,103,101,110,116,104,111,115,116,108,98,45,116,111,107,101,110,103,114,112,99,45,112,114,101,118,105,111,117,115,45,114,112,99,45,97,116,116,101,109,112,116,115,103,114,112,99,45,114,101,116,114,121,45,112,117,115,104,98,97,99,107,45,109,115,103,114,112,99,45,116,105,109,101,111,117,116,49,50,51,52,103,114,112,99,46,119,97,105,116,95,102,111,114,95,114,101,97,100,121,103,114,112,99,46,116,105,109,101,111,117,116,103,114,112,99,46,109,97,120,95,114,101,113,117,101,115,116,95,109,101,115,115,97,103,101,95,98,121,116,101,115,103,114,112,99,46,109,97,120,95,114,101,115,112,111,110,115,101,95,109,101,115,115,97,103,101,95,98,121,116,101,115,47,103,114,112,99,46,108,98,46,118,49,46,76,111,97,100,66,97,108,97,110,99,101,114,47,66,97,108,97,110,99,101,76,111,97,100,100,101,102,108,97,116,101,103,122,105,112,115,116,114,101,97,109,47,103,122,105,112,48,105,100,101,110,116,105,116,121,116,114,97,105,108,101,114,115,97,112,112,108,105,99,97,116,105,111,110,47,103,114,112,99,80,79,83,84,50,48,48,52,48,52,104,116,116,112,104,116,116,112,115,103,114,112,99,71,69,84,80,85,84,47,47,105,110,100,101,120,46,104,116,109,108,50,48,52,50,48,54,51,48,52,52,48,48,53,48,48,97,99,99,101,112,116,45,99,104,97,114,115,101,116,103,122,105,112,44,32,100,101,102,108,97,116,101,97,99,99,101,112,116,45,108,97,110,103,117,97,103,101,97,99,99,101,112,116,45,114,97,110,103,101,115,97,99,99,101,112,116,97,99,99,101,115,115,45,99,111,110,116,114,111,108,45,97,108,108,111,119,45,111,114,105,103,105,110,97,103,101,97,108,108,111,119,97,117,116,104,111,114,105,122,97,116,105,111,110,99,97,99,104,101,45,99,111,110,116,114,111,108,99,111,110,116,101,110,116,45,100,105,115,112,111,115,105,116,105,111,110,99,111,110,116,101,110,116,45,108,97,110,103,117,97,103,101,99,111,110,116,101,110,116,45,108,101,110,103,116,104,99,111,110,116,101,110,116,45,108,111,99,97,116,105,111,110,99,111,110,116,101,110,116,45,114,97,110,103,101,99,111,111,107,105,101,100,97,116,101,101,116,97,103,101,120,112,101,99,116,101,120,112,105,114,101,115,102,114,111,109,105,102,45,109,97,116,99,104,105,102,45,109,111,100,105,102,105,101,100,45,115,105,110,99,101,105,102,45,110,111,110,101,45,109,97,116,99,104,105,102,45,114,97,110,103,101,105,102,45,117,110,109,111,100,105,102,105,101,100,45,115,105,110,99,101,108,97,115,116,45,109,111,100,105,102,105,101,100,108,98,45,99,111,115,116,45,98,105,110,108,105,110,107,108,111,99,97,116,105,111,110,109,97,120,45,102,111,114,119,97,114,100,115,112,114,111,120,121,45,97,117,116,104,101,110,116,105,99,97,116,101,112,114,111,120,121,45,97,117,116,104,111,114,105,122,97,116,105,111,110,114,97,110,103,101,114,101,102,101,114,101,114,114,101,102,114,101,115,104,114,101,116,114,121,45,97,102,116,101,114,115,101,114,118,101,114,115,101,116,45,99,111,111,107,105,101,115,116,114,105,99,116,45,116,114,97,110,115,112,111,114,116,45,115,101,99,117,114,105,116,121,116,114,97,110,115,102,101,114,45,101,110,99,111,100,105,110,103,118,97,114,121,118,105,97,119,119,119,45,97,117,116,104,101,110,116,105,99,97,116,101,105,100,101,110,116,105,116,121,44,100,101,102,108,97,116,101,105,100,101,110,116,105,116,121,44,103,122,105,112,100,101,102,108,97,116,101,44,103,122,105,112,105,100,101,110,116,105,116,121,44,100,101,102,108,97,116,101,44,103,122,105,112};
+static uint8_t g_bytes[] = {
+    58,  112, 97,  116, 104, 58,  109, 101, 116, 104, 111, 100, 58,  115, 116,
+    97,  116, 117, 115, 58,  97,  117, 116, 104, 111, 114, 105, 116, 121, 58,
+    115, 99,  104, 101, 109, 101, 116, 101, 103, 114, 112, 99,  45,  109, 101,
+    115, 115, 97,  103, 101, 103, 114, 112, 99,  45,  115, 116, 97,  116, 117,
+    115, 103, 114, 112, 99,  45,  112, 97,  121, 108, 111, 97,  100, 45,  98,
+    105, 110, 103, 114, 112, 99,  45,  101, 110, 99,  111, 100, 105, 110, 103,
+    103, 114, 112, 99,  45,  97,  99,  99,  101, 112, 116, 45,  101, 110, 99,
+    111, 100, 105, 110, 103, 103, 114, 112, 99,  45,  115, 101, 114, 118, 101,
+    114, 45,  115, 116, 97,  116, 115, 45,  98,  105, 110, 103, 114, 112, 99,
+    45,  116, 97,  103, 115, 45,  98,  105, 110, 103, 114, 112, 99,  45,  116,
+    114, 97,  99,  101, 45,  98,  105, 110, 99,  111, 110, 116, 101, 110, 116,
+    45,  116, 121, 112, 101, 99,  111, 110, 116, 101, 110, 116, 45,  101, 110,
+    99,  111, 100, 105, 110, 103, 97,  99,  99,  101, 112, 116, 45,  101, 110,
+    99,  111, 100, 105, 110, 103, 103, 114, 112, 99,  45,  105, 110, 116, 101,
+    114, 110, 97,  108, 45,  101, 110, 99,  111, 100, 105, 110, 103, 45,  114,
+    101, 113, 117, 101, 115, 116, 103, 114, 112, 99,  45,  105, 110, 116, 101,
+    114, 110, 97,  108, 45,  115, 116, 114, 101, 97,  109, 45,  101, 110, 99,
+    111, 100, 105, 110, 103, 45,  114, 101, 113, 117, 101, 115, 116, 117, 115,
+    101, 114, 45,  97,  103, 101, 110, 116, 104, 111, 115, 116, 108, 98,  45,
+    116, 111, 107, 101, 110, 103, 114, 112, 99,  45,  112, 114, 101, 118, 105,
+    111, 117, 115, 45,  114, 112, 99,  45,  97,  116, 116, 101, 109, 112, 116,
+    115, 103, 114, 112, 99,  45,  114, 101, 116, 114, 121, 45,  112, 117, 115,
+    104, 98,  97,  99,  107, 45,  109, 115, 103, 114, 112, 99,  45,  116, 105,
+    109, 101, 111, 117, 116, 49,  50,  51,  52,  103, 114, 112, 99,  46,  119,
+    97,  105, 116, 95,  102, 111, 114, 95,  114, 101, 97,  100, 121, 103, 114,
+    112, 99,  46,  116, 105, 109, 101, 111, 117, 116, 103, 114, 112, 99,  46,
+    109, 97,  120, 95,  114, 101, 113, 117, 101, 115, 116, 95,  109, 101, 115,
+    115, 97,  103, 101, 95,  98,  121, 116, 101, 115, 103, 114, 112, 99,  46,
+    109, 97,  120, 95,  114, 101, 115, 112, 111, 110, 115, 101, 95,  109, 101,
+    115, 115, 97,  103, 101, 95,  98,  121, 116, 101, 115, 47,  103, 114, 112,
+    99,  46,  108, 98,  46,  118, 49,  46,  76,  111, 97,  100, 66,  97,  108,
+    97,  110, 99,  101, 114, 47,  66,  97,  108, 97,  110, 99,  101, 76,  111,
+    97,  100, 100, 101, 102, 108, 97,  116, 101, 103, 122, 105, 112, 115, 116,
+    114, 101, 97,  109, 47,  103, 122, 105, 112, 48,  105, 100, 101, 110, 116,
+    105, 116, 121, 116, 114, 97,  105, 108, 101, 114, 115, 97,  112, 112, 108,
+    105, 99,  97,  116, 105, 111, 110, 47,  103, 114, 112, 99,  80,  79,  83,
+    84,  50,  48,  48,  52,  48,  52,  104, 116, 116, 112, 104, 116, 116, 112,
+    115, 103, 114, 112, 99,  71,  69,  84,  80,  85,  84,  47,  47,  105, 110,
+    100, 101, 120, 46,  104, 116, 109, 108, 50,  48,  52,  50,  48,  54,  51,
+    48,  52,  52,  48,  48,  53,  48,  48,  97,  99,  99,  101, 112, 116, 45,
+    99,  104, 97,  114, 115, 101, 116, 103, 122, 105, 112, 44,  32,  100, 101,
+    102, 108, 97,  116, 101, 97,  99,  99,  101, 112, 116, 45,  108, 97,  110,
+    103, 117, 97,  103, 101, 97,  99,  99,  101, 112, 116, 45,  114, 97,  110,
+    103, 101, 115, 97,  99,  99,  101, 112, 116, 97,  99,  99,  101, 115, 115,
+    45,  99,  111, 110, 116, 114, 111, 108, 45,  97,  108, 108, 111, 119, 45,
+    111, 114, 105, 103, 105, 110, 97,  103, 101, 97,  108, 108, 111, 119, 97,
+    117, 116, 104, 111, 114, 105, 122, 97,  116, 105, 111, 110, 99,  97,  99,
+    104, 101, 45,  99,  111, 110, 116, 114, 111, 108, 99,  111, 110, 116, 101,
+    110, 116, 45,  100, 105, 115, 112, 111, 115, 105, 116, 105, 111, 110, 99,
+    111, 110, 116, 101, 110, 116, 45,  108, 97,  110, 103, 117, 97,  103, 101,
+    99,  111, 110, 116, 101, 110, 116, 45,  108, 101, 110, 103, 116, 104, 99,
+    111, 110, 116, 101, 110, 116, 45,  108, 111, 99,  97,  116, 105, 111, 110,
+    99,  111, 110, 116, 101, 110, 116, 45,  114, 97,  110, 103, 101, 99,  111,
+    111, 107, 105, 101, 100, 97,  116, 101, 101, 116, 97,  103, 101, 120, 112,
+    101, 99,  116, 101, 120, 112, 105, 114, 101, 115, 102, 114, 111, 109, 105,
+    102, 45,  109, 97,  116, 99,  104, 105, 102, 45,  109, 111, 100, 105, 102,
+    105, 101, 100, 45,  115, 105, 110, 99,  101, 105, 102, 45,  110, 111, 110,
+    101, 45,  109, 97,  116, 99,  104, 105, 102, 45,  114, 97,  110, 103, 101,
+    105, 102, 45,  117, 110, 109, 111, 100, 105, 102, 105, 101, 100, 45,  115,
+    105, 110, 99,  101, 108, 97,  115, 116, 45,  109, 111, 100, 105, 102, 105,
+    101, 100, 108, 98,  45,  99,  111, 115, 116, 45,  98,  105, 110, 108, 105,
+    110, 107, 108, 111, 99,  97,  116, 105, 111, 110, 109, 97,  120, 45,  102,
+    111, 114, 119, 97,  114, 100, 115, 112, 114, 111, 120, 121, 45,  97,  117,
+    116, 104, 101, 110, 116, 105, 99,  97,  116, 101, 112, 114, 111, 120, 121,
+    45,  97,  117, 116, 104, 111, 114, 105, 122, 97,  116, 105, 111, 110, 114,
+    97,  110, 103, 101, 114, 101, 102, 101, 114, 101, 114, 114, 101, 102, 114,
+    101, 115, 104, 114, 101, 116, 114, 121, 45,  97,  102, 116, 101, 114, 115,
+    101, 114, 118, 101, 114, 115, 101, 116, 45,  99,  111, 111, 107, 105, 101,
+    115, 116, 114, 105, 99,  116, 45,  116, 114, 97,  110, 115, 112, 111, 114,
+    116, 45,  115, 101, 99,  117, 114, 105, 116, 121, 116, 114, 97,  110, 115,
+    102, 101, 114, 45,  101, 110, 99,  111, 100, 105, 110, 103, 118, 97,  114,
+    121, 118, 105, 97,  119, 119, 119, 45,  97,  117, 116, 104, 101, 110, 116,
+    105, 99,  97,  116, 101, 105, 100, 101, 110, 116, 105, 116, 121, 44,  100,
+    101, 102, 108, 97,  116, 101, 105, 100, 101, 110, 116, 105, 116, 121, 44,
+    103, 122, 105, 112, 100, 101, 102, 108, 97,  116, 101, 44,  103, 122, 105,
+    112, 105, 100, 101, 110, 116, 105, 116, 121, 44,  100, 101, 102, 108, 97,
+    116, 101, 44,  103, 122, 105, 112};
 
-static void static_ref(void *unused) {}
-static void static_unref(void *unused) {}
-static const grpc_slice_refcount_vtable static_sub_vtable = {static_ref, static_unref, grpc_slice_default_eq_impl, grpc_slice_default_hash_impl};
-const grpc_slice_refcount_vtable grpc_static_metadata_vtable = {static_ref, static_unref, grpc_static_slice_eq, grpc_static_slice_hash};
-static grpc_slice_refcount static_sub_refcnt = {&static_sub_vtable, &static_sub_refcnt};
+static void static_ref(void* unused) {}
+static void static_unref(void* unused) {}
+static const grpc_slice_refcount_vtable static_sub_vtable = {
+    static_ref, static_unref, grpc_slice_default_eq_impl,
+    grpc_slice_default_hash_impl};
+const grpc_slice_refcount_vtable grpc_static_metadata_vtable = {
+    static_ref, static_unref, grpc_static_slice_eq, grpc_static_slice_hash};
+static grpc_slice_refcount static_sub_refcnt = {&static_sub_vtable,
+                                                &static_sub_refcnt};
 grpc_slice_refcount grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT] = {
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
-  {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
 };
 
 const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT] = {
-{&grpc_static_metadata_refcounts[0], {{g_bytes+0, 5}}},
-{&grpc_static_metadata_refcounts[1], {{g_bytes+5, 7}}},
-{&grpc_static_metadata_refcounts[2], {{g_bytes+12, 7}}},
-{&grpc_static_metadata_refcounts[3], {{g_bytes+19, 10}}},
-{&grpc_static_metadata_refcounts[4], {{g_bytes+29, 7}}},
-{&grpc_static_metadata_refcounts[5], {{g_bytes+36, 2}}},
-{&grpc_static_metadata_refcounts[6], {{g_bytes+38, 12}}},
-{&grpc_static_metadata_refcounts[7], {{g_bytes+50, 11}}},
-{&grpc_static_metadata_refcounts[8], {{g_bytes+61, 16}}},
-{&grpc_static_metadata_refcounts[9], {{g_bytes+77, 13}}},
-{&grpc_static_metadata_refcounts[10], {{g_bytes+90, 20}}},
-{&grpc_static_metadata_refcounts[11], {{g_bytes+110, 21}}},
-{&grpc_static_metadata_refcounts[12], {{g_bytes+131, 13}}},
-{&grpc_static_metadata_refcounts[13], {{g_bytes+144, 14}}},
-{&grpc_static_metadata_refcounts[14], {{g_bytes+158, 12}}},
-{&grpc_static_metadata_refcounts[15], {{g_bytes+170, 16}}},
-{&grpc_static_metadata_refcounts[16], {{g_bytes+186, 15}}},
-{&grpc_static_metadata_refcounts[17], {{g_bytes+201, 30}}},
-{&grpc_static_metadata_refcounts[18], {{g_bytes+231, 37}}},
-{&grpc_static_metadata_refcounts[19], {{g_bytes+268, 10}}},
-{&grpc_static_metadata_refcounts[20], {{g_bytes+278, 4}}},
-{&grpc_static_metadata_refcounts[21], {{g_bytes+282, 8}}},
-{&grpc_static_metadata_refcounts[22], {{g_bytes+290, 26}}},
-{&grpc_static_metadata_refcounts[23], {{g_bytes+316, 22}}},
-{&grpc_static_metadata_refcounts[24], {{g_bytes+338, 12}}},
-{&grpc_static_metadata_refcounts[25], {{g_bytes+350, 1}}},
-{&grpc_static_metadata_refcounts[26], {{g_bytes+351, 1}}},
-{&grpc_static_metadata_refcounts[27], {{g_bytes+352, 1}}},
-{&grpc_static_metadata_refcounts[28], {{g_bytes+353, 1}}},
-{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}},
-{&grpc_static_metadata_refcounts[30], {{g_bytes+354, 19}}},
-{&grpc_static_metadata_refcounts[31], {{g_bytes+373, 12}}},
-{&grpc_static_metadata_refcounts[32], {{g_bytes+385, 30}}},
-{&grpc_static_metadata_refcounts[33], {{g_bytes+415, 31}}},
-{&grpc_static_metadata_refcounts[34], {{g_bytes+446, 36}}},
-{&grpc_static_metadata_refcounts[35], {{g_bytes+482, 7}}},
-{&grpc_static_metadata_refcounts[36], {{g_bytes+489, 4}}},
-{&grpc_static_metadata_refcounts[37], {{g_bytes+493, 11}}},
-{&grpc_static_metadata_refcounts[38], {{g_bytes+504, 1}}},
-{&grpc_static_metadata_refcounts[39], {{g_bytes+505, 8}}},
-{&grpc_static_metadata_refcounts[40], {{g_bytes+513, 8}}},
-{&grpc_static_metadata_refcounts[41], {{g_bytes+521, 16}}},
-{&grpc_static_metadata_refcounts[42], {{g_bytes+537, 4}}},
-{&grpc_static_metadata_refcounts[43], {{g_bytes+541, 3}}},
-{&grpc_static_metadata_refcounts[44], {{g_bytes+544, 3}}},
-{&grpc_static_metadata_refcounts[45], {{g_bytes+547, 4}}},
-{&grpc_static_metadata_refcounts[46], {{g_bytes+551, 5}}},
-{&grpc_static_metadata_refcounts[47], {{g_bytes+556, 4}}},
-{&grpc_static_metadata_refcounts[48], {{g_bytes+560, 3}}},
-{&grpc_static_metadata_refcounts[49], {{g_bytes+563, 3}}},
-{&grpc_static_metadata_refcounts[50], {{g_bytes+566, 1}}},
-{&grpc_static_metadata_refcounts[51], {{g_bytes+567, 11}}},
-{&grpc_static_metadata_refcounts[52], {{g_bytes+578, 3}}},
-{&grpc_static_metadata_refcounts[53], {{g_bytes+581, 3}}},
-{&grpc_static_metadata_refcounts[54], {{g_bytes+584, 3}}},
-{&grpc_static_metadata_refcounts[55], {{g_bytes+587, 3}}},
-{&grpc_static_metadata_refcounts[56], {{g_bytes+590, 3}}},
-{&grpc_static_metadata_refcounts[57], {{g_bytes+593, 14}}},
-{&grpc_static_metadata_refcounts[58], {{g_bytes+607, 13}}},
-{&grpc_static_metadata_refcounts[59], {{g_bytes+620, 15}}},
-{&grpc_static_metadata_refcounts[60], {{g_bytes+635, 13}}},
-{&grpc_static_metadata_refcounts[61], {{g_bytes+648, 6}}},
-{&grpc_static_metadata_refcounts[62], {{g_bytes+654, 27}}},
-{&grpc_static_metadata_refcounts[63], {{g_bytes+681, 3}}},
-{&grpc_static_metadata_refcounts[64], {{g_bytes+684, 5}}},
-{&grpc_static_metadata_refcounts[65], {{g_bytes+689, 13}}},
-{&grpc_static_metadata_refcounts[66], {{g_bytes+702, 13}}},
-{&grpc_static_metadata_refcounts[67], {{g_bytes+715, 19}}},
-{&grpc_static_metadata_refcounts[68], {{g_bytes+734, 16}}},
-{&grpc_static_metadata_refcounts[69], {{g_bytes+750, 14}}},
-{&grpc_static_metadata_refcounts[70], {{g_bytes+764, 16}}},
-{&grpc_static_metadata_refcounts[71], {{g_bytes+780, 13}}},
-{&grpc_static_metadata_refcounts[72], {{g_bytes+793, 6}}},
-{&grpc_static_metadata_refcounts[73], {{g_bytes+799, 4}}},
-{&grpc_static_metadata_refcounts[74], {{g_bytes+803, 4}}},
-{&grpc_static_metadata_refcounts[75], {{g_bytes+807, 6}}},
-{&grpc_static_metadata_refcounts[76], {{g_bytes+813, 7}}},
-{&grpc_static_metadata_refcounts[77], {{g_bytes+820, 4}}},
-{&grpc_static_metadata_refcounts[78], {{g_bytes+824, 8}}},
-{&grpc_static_metadata_refcounts[79], {{g_bytes+832, 17}}},
-{&grpc_static_metadata_refcounts[80], {{g_bytes+849, 13}}},
-{&grpc_static_metadata_refcounts[81], {{g_bytes+862, 8}}},
-{&grpc_static_metadata_refcounts[82], {{g_bytes+870, 19}}},
-{&grpc_static_metadata_refcounts[83], {{g_bytes+889, 13}}},
-{&grpc_static_metadata_refcounts[84], {{g_bytes+902, 11}}},
-{&grpc_static_metadata_refcounts[85], {{g_bytes+913, 4}}},
-{&grpc_static_metadata_refcounts[86], {{g_bytes+917, 8}}},
-{&grpc_static_metadata_refcounts[87], {{g_bytes+925, 12}}},
-{&grpc_static_metadata_refcounts[88], {{g_bytes+937, 18}}},
-{&grpc_static_metadata_refcounts[89], {{g_bytes+955, 19}}},
-{&grpc_static_metadata_refcounts[90], {{g_bytes+974, 5}}},
-{&grpc_static_metadata_refcounts[91], {{g_bytes+979, 7}}},
-{&grpc_static_metadata_refcounts[92], {{g_bytes+986, 7}}},
-{&grpc_static_metadata_refcounts[93], {{g_bytes+993, 11}}},
-{&grpc_static_metadata_refcounts[94], {{g_bytes+1004, 6}}},
-{&grpc_static_metadata_refcounts[95], {{g_bytes+1010, 10}}},
-{&grpc_static_metadata_refcounts[96], {{g_bytes+1020, 25}}},
-{&grpc_static_metadata_refcounts[97], {{g_bytes+1045, 17}}},
-{&grpc_static_metadata_refcounts[98], {{g_bytes+1062, 4}}},
-{&grpc_static_metadata_refcounts[99], {{g_bytes+1066, 3}}},
-{&grpc_static_metadata_refcounts[100], {{g_bytes+1069, 16}}},
-{&grpc_static_metadata_refcounts[101], {{g_bytes+1085, 16}}},
-{&grpc_static_metadata_refcounts[102], {{g_bytes+1101, 13}}},
-{&grpc_static_metadata_refcounts[103], {{g_bytes+1114, 12}}},
-{&grpc_static_metadata_refcounts[104], {{g_bytes+1126, 21}}},
+    {&grpc_static_metadata_refcounts[0], {{g_bytes + 0, 5}}},
+    {&grpc_static_metadata_refcounts[1], {{g_bytes + 5, 7}}},
+    {&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+    {&grpc_static_metadata_refcounts[3], {{g_bytes + 19, 10}}},
+    {&grpc_static_metadata_refcounts[4], {{g_bytes + 29, 7}}},
+    {&grpc_static_metadata_refcounts[5], {{g_bytes + 36, 2}}},
+    {&grpc_static_metadata_refcounts[6], {{g_bytes + 38, 12}}},
+    {&grpc_static_metadata_refcounts[7], {{g_bytes + 50, 11}}},
+    {&grpc_static_metadata_refcounts[8], {{g_bytes + 61, 16}}},
+    {&grpc_static_metadata_refcounts[9], {{g_bytes + 77, 13}}},
+    {&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+    {&grpc_static_metadata_refcounts[11], {{g_bytes + 110, 21}}},
+    {&grpc_static_metadata_refcounts[12], {{g_bytes + 131, 13}}},
+    {&grpc_static_metadata_refcounts[13], {{g_bytes + 144, 14}}},
+    {&grpc_static_metadata_refcounts[14], {{g_bytes + 158, 12}}},
+    {&grpc_static_metadata_refcounts[15], {{g_bytes + 170, 16}}},
+    {&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+    {&grpc_static_metadata_refcounts[17], {{g_bytes + 201, 30}}},
+    {&grpc_static_metadata_refcounts[18], {{g_bytes + 231, 37}}},
+    {&grpc_static_metadata_refcounts[19], {{g_bytes + 268, 10}}},
+    {&grpc_static_metadata_refcounts[20], {{g_bytes + 278, 4}}},
+    {&grpc_static_metadata_refcounts[21], {{g_bytes + 282, 8}}},
+    {&grpc_static_metadata_refcounts[22], {{g_bytes + 290, 26}}},
+    {&grpc_static_metadata_refcounts[23], {{g_bytes + 316, 22}}},
+    {&grpc_static_metadata_refcounts[24], {{g_bytes + 338, 12}}},
+    {&grpc_static_metadata_refcounts[25], {{g_bytes + 350, 1}}},
+    {&grpc_static_metadata_refcounts[26], {{g_bytes + 351, 1}}},
+    {&grpc_static_metadata_refcounts[27], {{g_bytes + 352, 1}}},
+    {&grpc_static_metadata_refcounts[28], {{g_bytes + 353, 1}}},
+    {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}},
+    {&grpc_static_metadata_refcounts[30], {{g_bytes + 354, 19}}},
+    {&grpc_static_metadata_refcounts[31], {{g_bytes + 373, 12}}},
+    {&grpc_static_metadata_refcounts[32], {{g_bytes + 385, 30}}},
+    {&grpc_static_metadata_refcounts[33], {{g_bytes + 415, 31}}},
+    {&grpc_static_metadata_refcounts[34], {{g_bytes + 446, 36}}},
+    {&grpc_static_metadata_refcounts[35], {{g_bytes + 482, 7}}},
+    {&grpc_static_metadata_refcounts[36], {{g_bytes + 489, 4}}},
+    {&grpc_static_metadata_refcounts[37], {{g_bytes + 493, 11}}},
+    {&grpc_static_metadata_refcounts[38], {{g_bytes + 504, 1}}},
+    {&grpc_static_metadata_refcounts[39], {{g_bytes + 505, 8}}},
+    {&grpc_static_metadata_refcounts[40], {{g_bytes + 513, 8}}},
+    {&grpc_static_metadata_refcounts[41], {{g_bytes + 521, 16}}},
+    {&grpc_static_metadata_refcounts[42], {{g_bytes + 537, 4}}},
+    {&grpc_static_metadata_refcounts[43], {{g_bytes + 541, 3}}},
+    {&grpc_static_metadata_refcounts[44], {{g_bytes + 544, 3}}},
+    {&grpc_static_metadata_refcounts[45], {{g_bytes + 547, 4}}},
+    {&grpc_static_metadata_refcounts[46], {{g_bytes + 551, 5}}},
+    {&grpc_static_metadata_refcounts[47], {{g_bytes + 556, 4}}},
+    {&grpc_static_metadata_refcounts[48], {{g_bytes + 560, 3}}},
+    {&grpc_static_metadata_refcounts[49], {{g_bytes + 563, 3}}},
+    {&grpc_static_metadata_refcounts[50], {{g_bytes + 566, 1}}},
+    {&grpc_static_metadata_refcounts[51], {{g_bytes + 567, 11}}},
+    {&grpc_static_metadata_refcounts[52], {{g_bytes + 578, 3}}},
+    {&grpc_static_metadata_refcounts[53], {{g_bytes + 581, 3}}},
+    {&grpc_static_metadata_refcounts[54], {{g_bytes + 584, 3}}},
+    {&grpc_static_metadata_refcounts[55], {{g_bytes + 587, 3}}},
+    {&grpc_static_metadata_refcounts[56], {{g_bytes + 590, 3}}},
+    {&grpc_static_metadata_refcounts[57], {{g_bytes + 593, 14}}},
+    {&grpc_static_metadata_refcounts[58], {{g_bytes + 607, 13}}},
+    {&grpc_static_metadata_refcounts[59], {{g_bytes + 620, 15}}},
+    {&grpc_static_metadata_refcounts[60], {{g_bytes + 635, 13}}},
+    {&grpc_static_metadata_refcounts[61], {{g_bytes + 648, 6}}},
+    {&grpc_static_metadata_refcounts[62], {{g_bytes + 654, 27}}},
+    {&grpc_static_metadata_refcounts[63], {{g_bytes + 681, 3}}},
+    {&grpc_static_metadata_refcounts[64], {{g_bytes + 684, 5}}},
+    {&grpc_static_metadata_refcounts[65], {{g_bytes + 689, 13}}},
+    {&grpc_static_metadata_refcounts[66], {{g_bytes + 702, 13}}},
+    {&grpc_static_metadata_refcounts[67], {{g_bytes + 715, 19}}},
+    {&grpc_static_metadata_refcounts[68], {{g_bytes + 734, 16}}},
+    {&grpc_static_metadata_refcounts[69], {{g_bytes + 750, 14}}},
+    {&grpc_static_metadata_refcounts[70], {{g_bytes + 764, 16}}},
+    {&grpc_static_metadata_refcounts[71], {{g_bytes + 780, 13}}},
+    {&grpc_static_metadata_refcounts[72], {{g_bytes + 793, 6}}},
+    {&grpc_static_metadata_refcounts[73], {{g_bytes + 799, 4}}},
+    {&grpc_static_metadata_refcounts[74], {{g_bytes + 803, 4}}},
+    {&grpc_static_metadata_refcounts[75], {{g_bytes + 807, 6}}},
+    {&grpc_static_metadata_refcounts[76], {{g_bytes + 813, 7}}},
+    {&grpc_static_metadata_refcounts[77], {{g_bytes + 820, 4}}},
+    {&grpc_static_metadata_refcounts[78], {{g_bytes + 824, 8}}},
+    {&grpc_static_metadata_refcounts[79], {{g_bytes + 832, 17}}},
+    {&grpc_static_metadata_refcounts[80], {{g_bytes + 849, 13}}},
+    {&grpc_static_metadata_refcounts[81], {{g_bytes + 862, 8}}},
+    {&grpc_static_metadata_refcounts[82], {{g_bytes + 870, 19}}},
+    {&grpc_static_metadata_refcounts[83], {{g_bytes + 889, 13}}},
+    {&grpc_static_metadata_refcounts[84], {{g_bytes + 902, 11}}},
+    {&grpc_static_metadata_refcounts[85], {{g_bytes + 913, 4}}},
+    {&grpc_static_metadata_refcounts[86], {{g_bytes + 917, 8}}},
+    {&grpc_static_metadata_refcounts[87], {{g_bytes + 925, 12}}},
+    {&grpc_static_metadata_refcounts[88], {{g_bytes + 937, 18}}},
+    {&grpc_static_metadata_refcounts[89], {{g_bytes + 955, 19}}},
+    {&grpc_static_metadata_refcounts[90], {{g_bytes + 974, 5}}},
+    {&grpc_static_metadata_refcounts[91], {{g_bytes + 979, 7}}},
+    {&grpc_static_metadata_refcounts[92], {{g_bytes + 986, 7}}},
+    {&grpc_static_metadata_refcounts[93], {{g_bytes + 993, 11}}},
+    {&grpc_static_metadata_refcounts[94], {{g_bytes + 1004, 6}}},
+    {&grpc_static_metadata_refcounts[95], {{g_bytes + 1010, 10}}},
+    {&grpc_static_metadata_refcounts[96], {{g_bytes + 1020, 25}}},
+    {&grpc_static_metadata_refcounts[97], {{g_bytes + 1045, 17}}},
+    {&grpc_static_metadata_refcounts[98], {{g_bytes + 1062, 4}}},
+    {&grpc_static_metadata_refcounts[99], {{g_bytes + 1066, 3}}},
+    {&grpc_static_metadata_refcounts[100], {{g_bytes + 1069, 16}}},
+    {&grpc_static_metadata_refcounts[101], {{g_bytes + 1085, 16}}},
+    {&grpc_static_metadata_refcounts[102], {{g_bytes + 1101, 13}}},
+    {&grpc_static_metadata_refcounts[103], {{g_bytes + 1114, 12}}},
+    {&grpc_static_metadata_refcounts[104], {{g_bytes + 1126, 21}}},
 };
 
 uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT] = {
-  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,4,4,6,6,8,8,2,4,4
-};
-
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 4, 6, 6, 8, 8, 2, 4, 4};
 
-static const int8_t elems_r[] = {16,11,-1,0,15,2,-78,24,0,18,-5,0,0,0,17,14,-8,0,0,27,8,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-64,0,-44,-43,-70,0,34,33,33,32,31,30,29,28,27,27,26,25,24,23,22,21,20,20,19,19,18,17,16,15,14,13,12,11,14,13,12,11,10,9,9,8,7,6,5,0};
+static const int8_t elems_r[] = {
+    16, 11, -1, 0,   15, 2,   -78, 24,  0,  18, -5, 0,  0,  0,  17, 14, -8, 0,
+    0,  27, 8,  7,   0,  0,   0,   0,   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,  0,  0,  0,   0,  0,   0,   0,   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,  0,  0,  -64, 0,  -44, -43, -70, 0,  34, 33, 33, 32, 31, 30, 29, 28, 27,
+    27, 26, 25, 24,  23, 22,  21,  20,  20, 19, 19, 18, 17, 16, 15, 14, 13, 12,
+    11, 14, 13, 12,  11, 10,  9,   9,   8,  7,  6,  5,  0};
 static uint32_t elems_phash(uint32_t i) {
   i -= 50;
   uint32_t x = i % 103;
@@ -268,136 +356,244 @@ static uint32_t elems_phash(uint32_t i) {
   }
   return h;
 }
-    
-static const uint16_t elem_keys[] = {1085,1086,565,1709,1089,262,263,264,265,266,1716,153,154,1719,760,761,50,51,465,466,467,980,981,1604,1499,984,773,2129,2234,6014,1611,6434,1738,1614,6539,6644,1511,6749,6854,6959,7064,7169,7274,7379,2024,7484,7589,7694,7799,7904,8009,8114,8219,6224,8324,8429,6329,8534,8639,8744,8849,8954,9059,9164,9269,9374,1151,1152,1153,1154,9479,9584,9689,9794,9899,10004,1782,10109,10214,10319,10424,10529,0,0,0,0,0,344,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,253,254,147,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
-static const uint8_t elem_idxs[] = {77,79,6,25,76,19,20,21,22,23,84,15,16,83,1,2,17,18,11,12,13,5,4,38,43,3,0,50,57,24,37,29,26,36,30,31,7,32,33,34,35,39,40,41,72,42,44,45,46,47,48,49,51,27,52,53,28,54,55,56,58,59,60,61,62,63,78,80,81,82,64,65,66,67,68,69,85,70,71,73,74,75,255,255,255,255,255,14,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,9,10,8};
+
+static const uint16_t elem_keys[] = {
+    1085,  1086,  565,   1709,  1089,  262,  263,  264,  265,  266,   1716,
+    153,   154,   1719,  760,   761,   50,   51,   465,  466,  467,   980,
+    981,   1604,  1499,  984,   773,   2129, 2234, 6014, 1611, 6434,  1738,
+    1614,  6539,  6644,  1511,  6749,  6854, 6959, 7064, 7169, 7274,  7379,
+    2024,  7484,  7589,  7694,  7799,  7904, 8009, 8114, 8219, 6224,  8324,
+    8429,  6329,  8534,  8639,  8744,  8849, 8954, 9059, 9164, 9269,  9374,
+    1151,  1152,  1153,  1154,  9479,  9584, 9689, 9794, 9899, 10004, 1782,
+    10109, 10214, 10319, 10424, 10529, 0,    0,    0,    0,    0,     344,
+    0,     0,     0,     0,     0,     0,    0,    0,    0,    0,     0,
+    0,     0,     0,     0,     0,     0,    0,    0,    0,    0,     0,
+    0,     253,   254,   147,   0,     0,    0,    0,    0,    0,     0,
+    0,     0,     0,     0,     0,     0,    0,    0,    0,    0,     0,
+    0,     0,     0,     0};
+static const uint8_t elem_idxs[] = {
+    77,  79,  6,   25,  76,  19,  20,  21,  22,  23,  84,  15,  16,  83,  1,
+    2,   17,  18,  11,  12,  13,  5,   4,   38,  43,  3,   0,   50,  57,  24,
+    37,  29,  26,  36,  30,  31,  7,   32,  33,  34,  35,  39,  40,  41,  72,
+    42,  44,  45,  46,  47,  48,  49,  51,  27,  52,  53,  28,  54,  55,  56,
+    58,  59,  60,  61,  62,  63,  78,  80,  81,  82,  64,  65,  66,  67,  68,
+    69,  85,  70,  71,  73,  74,  75,  255, 255, 255, 255, 255, 14,  255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 9,   10,  8};
 
 grpc_mdelem grpc_static_mdelem_for_static_strings(int a, int b) {
   if (a == -1 || b == -1) return GRPC_MDNULL;
   uint32_t k = (uint32_t)(a * 105 + b);
   uint32_t h = elems_phash(k);
-  return h < GPR_ARRAY_SIZE(elem_keys) && elem_keys[h] == k && elem_idxs[h] != 255 ? GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[elem_idxs[h]], GRPC_MDELEM_STORAGE_STATIC, 0) : GRPC_MDNULL;
+  return h < GPR_ARRAY_SIZE(elem_keys) && elem_keys[h] == k &&
+                 elem_idxs[h] != 255
+             ? GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[elem_idxs[h]],
+                                GRPC_MDELEM_STORAGE_STATIC, 0)
+             : GRPC_MDNULL;
 }
 
 grpc_mdelem_data grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT] = {
-{{&grpc_static_metadata_refcounts[7], {{g_bytes+50, 11}}},{&grpc_static_metadata_refcounts[38], {{g_bytes+504, 1}}}},
-{{&grpc_static_metadata_refcounts[7], {{g_bytes+50, 11}}},{&grpc_static_metadata_refcounts[25], {{g_bytes+350, 1}}}},
-{{&grpc_static_metadata_refcounts[7], {{g_bytes+50, 11}}},{&grpc_static_metadata_refcounts[26], {{g_bytes+351, 1}}}},
-{{&grpc_static_metadata_refcounts[9], {{g_bytes+77, 13}}},{&grpc_static_metadata_refcounts[39], {{g_bytes+505, 8}}}},
-{{&grpc_static_metadata_refcounts[9], {{g_bytes+77, 13}}},{&grpc_static_metadata_refcounts[36], {{g_bytes+489, 4}}}},
-{{&grpc_static_metadata_refcounts[9], {{g_bytes+77, 13}}},{&grpc_static_metadata_refcounts[35], {{g_bytes+482, 7}}}},
-{{&grpc_static_metadata_refcounts[5], {{g_bytes+36, 2}}},{&grpc_static_metadata_refcounts[40], {{g_bytes+513, 8}}}},
-{{&grpc_static_metadata_refcounts[14], {{g_bytes+158, 12}}},{&grpc_static_metadata_refcounts[41], {{g_bytes+521, 16}}}},
-{{&grpc_static_metadata_refcounts[1], {{g_bytes+5, 7}}},{&grpc_static_metadata_refcounts[42], {{g_bytes+537, 4}}}},
-{{&grpc_static_metadata_refcounts[2], {{g_bytes+12, 7}}},{&grpc_static_metadata_refcounts[43], {{g_bytes+541, 3}}}},
-{{&grpc_static_metadata_refcounts[2], {{g_bytes+12, 7}}},{&grpc_static_metadata_refcounts[44], {{g_bytes+544, 3}}}},
-{{&grpc_static_metadata_refcounts[4], {{g_bytes+29, 7}}},{&grpc_static_metadata_refcounts[45], {{g_bytes+547, 4}}}},
-{{&grpc_static_metadata_refcounts[4], {{g_bytes+29, 7}}},{&grpc_static_metadata_refcounts[46], {{g_bytes+551, 5}}}},
-{{&grpc_static_metadata_refcounts[4], {{g_bytes+29, 7}}},{&grpc_static_metadata_refcounts[47], {{g_bytes+556, 4}}}},
-{{&grpc_static_metadata_refcounts[3], {{g_bytes+19, 10}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[1], {{g_bytes+5, 7}}},{&grpc_static_metadata_refcounts[48], {{g_bytes+560, 3}}}},
-{{&grpc_static_metadata_refcounts[1], {{g_bytes+5, 7}}},{&grpc_static_metadata_refcounts[49], {{g_bytes+563, 3}}}},
-{{&grpc_static_metadata_refcounts[0], {{g_bytes+0, 5}}},{&grpc_static_metadata_refcounts[50], {{g_bytes+566, 1}}}},
-{{&grpc_static_metadata_refcounts[0], {{g_bytes+0, 5}}},{&grpc_static_metadata_refcounts[51], {{g_bytes+567, 11}}}},
-{{&grpc_static_metadata_refcounts[2], {{g_bytes+12, 7}}},{&grpc_static_metadata_refcounts[52], {{g_bytes+578, 3}}}},
-{{&grpc_static_metadata_refcounts[2], {{g_bytes+12, 7}}},{&grpc_static_metadata_refcounts[53], {{g_bytes+581, 3}}}},
-{{&grpc_static_metadata_refcounts[2], {{g_bytes+12, 7}}},{&grpc_static_metadata_refcounts[54], {{g_bytes+584, 3}}}},
-{{&grpc_static_metadata_refcounts[2], {{g_bytes+12, 7}}},{&grpc_static_metadata_refcounts[55], {{g_bytes+587, 3}}}},
-{{&grpc_static_metadata_refcounts[2], {{g_bytes+12, 7}}},{&grpc_static_metadata_refcounts[56], {{g_bytes+590, 3}}}},
-{{&grpc_static_metadata_refcounts[57], {{g_bytes+593, 14}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[16], {{g_bytes+186, 15}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[16], {{g_bytes+186, 15}}},{&grpc_static_metadata_refcounts[58], {{g_bytes+607, 13}}}},
-{{&grpc_static_metadata_refcounts[59], {{g_bytes+620, 15}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[60], {{g_bytes+635, 13}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[61], {{g_bytes+648, 6}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[62], {{g_bytes+654, 27}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[63], {{g_bytes+681, 3}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[64], {{g_bytes+684, 5}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[65], {{g_bytes+689, 13}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[66], {{g_bytes+702, 13}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[67], {{g_bytes+715, 19}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[15], {{g_bytes+170, 16}}},{&grpc_static_metadata_refcounts[39], {{g_bytes+505, 8}}}},
-{{&grpc_static_metadata_refcounts[15], {{g_bytes+170, 16}}},{&grpc_static_metadata_refcounts[36], {{g_bytes+489, 4}}}},
-{{&grpc_static_metadata_refcounts[15], {{g_bytes+170, 16}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[68], {{g_bytes+734, 16}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[69], {{g_bytes+750, 14}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[70], {{g_bytes+764, 16}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[71], {{g_bytes+780, 13}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[14], {{g_bytes+158, 12}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[72], {{g_bytes+793, 6}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[73], {{g_bytes+799, 4}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[74], {{g_bytes+803, 4}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[75], {{g_bytes+807, 6}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[76], {{g_bytes+813, 7}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[77], {{g_bytes+820, 4}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[20], {{g_bytes+278, 4}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[78], {{g_bytes+824, 8}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[79], {{g_bytes+832, 17}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[80], {{g_bytes+849, 13}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[81], {{g_bytes+862, 8}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[82], {{g_bytes+870, 19}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[83], {{g_bytes+889, 13}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[21], {{g_bytes+282, 8}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[84], {{g_bytes+902, 11}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[85], {{g_bytes+913, 4}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[86], {{g_bytes+917, 8}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[87], {{g_bytes+925, 12}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[88], {{g_bytes+937, 18}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[89], {{g_bytes+955, 19}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[90], {{g_bytes+974, 5}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[91], {{g_bytes+979, 7}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[92], {{g_bytes+986, 7}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[93], {{g_bytes+993, 11}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[94], {{g_bytes+1004, 6}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[95], {{g_bytes+1010, 10}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[96], {{g_bytes+1020, 25}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[97], {{g_bytes+1045, 17}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[19], {{g_bytes+268, 10}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[98], {{g_bytes+1062, 4}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[99], {{g_bytes+1066, 3}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[100], {{g_bytes+1069, 16}}},{&grpc_static_metadata_refcounts[29], {{g_bytes+354, 0}}}},
-{{&grpc_static_metadata_refcounts[10], {{g_bytes+90, 20}}},{&grpc_static_metadata_refcounts[39], {{g_bytes+505, 8}}}},
-{{&grpc_static_metadata_refcounts[10], {{g_bytes+90, 20}}},{&grpc_static_metadata_refcounts[35], {{g_bytes+482, 7}}}},
-{{&grpc_static_metadata_refcounts[10], {{g_bytes+90, 20}}},{&grpc_static_metadata_refcounts[101], {{g_bytes+1085, 16}}}},
-{{&grpc_static_metadata_refcounts[10], {{g_bytes+90, 20}}},{&grpc_static_metadata_refcounts[36], {{g_bytes+489, 4}}}},
-{{&grpc_static_metadata_refcounts[10], {{g_bytes+90, 20}}},{&grpc_static_metadata_refcounts[102], {{g_bytes+1101, 13}}}},
-{{&grpc_static_metadata_refcounts[10], {{g_bytes+90, 20}}},{&grpc_static_metadata_refcounts[103], {{g_bytes+1114, 12}}}},
-{{&grpc_static_metadata_refcounts[10], {{g_bytes+90, 20}}},{&grpc_static_metadata_refcounts[104], {{g_bytes+1126, 21}}}},
-{{&grpc_static_metadata_refcounts[16], {{g_bytes+186, 15}}},{&grpc_static_metadata_refcounts[39], {{g_bytes+505, 8}}}},
-{{&grpc_static_metadata_refcounts[16], {{g_bytes+186, 15}}},{&grpc_static_metadata_refcounts[36], {{g_bytes+489, 4}}}},
-{{&grpc_static_metadata_refcounts[16], {{g_bytes+186, 15}}},{&grpc_static_metadata_refcounts[102], {{g_bytes+1101, 13}}}},
+    {{&grpc_static_metadata_refcounts[7], {{g_bytes + 50, 11}}},
+     {&grpc_static_metadata_refcounts[38], {{g_bytes + 504, 1}}}},
+    {{&grpc_static_metadata_refcounts[7], {{g_bytes + 50, 11}}},
+     {&grpc_static_metadata_refcounts[25], {{g_bytes + 350, 1}}}},
+    {{&grpc_static_metadata_refcounts[7], {{g_bytes + 50, 11}}},
+     {&grpc_static_metadata_refcounts[26], {{g_bytes + 351, 1}}}},
+    {{&grpc_static_metadata_refcounts[9], {{g_bytes + 77, 13}}},
+     {&grpc_static_metadata_refcounts[39], {{g_bytes + 505, 8}}}},
+    {{&grpc_static_metadata_refcounts[9], {{g_bytes + 77, 13}}},
+     {&grpc_static_metadata_refcounts[36], {{g_bytes + 489, 4}}}},
+    {{&grpc_static_metadata_refcounts[9], {{g_bytes + 77, 13}}},
+     {&grpc_static_metadata_refcounts[35], {{g_bytes + 482, 7}}}},
+    {{&grpc_static_metadata_refcounts[5], {{g_bytes + 36, 2}}},
+     {&grpc_static_metadata_refcounts[40], {{g_bytes + 513, 8}}}},
+    {{&grpc_static_metadata_refcounts[14], {{g_bytes + 158, 12}}},
+     {&grpc_static_metadata_refcounts[41], {{g_bytes + 521, 16}}}},
+    {{&grpc_static_metadata_refcounts[1], {{g_bytes + 5, 7}}},
+     {&grpc_static_metadata_refcounts[42], {{g_bytes + 537, 4}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[43], {{g_bytes + 541, 3}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[44], {{g_bytes + 544, 3}}}},
+    {{&grpc_static_metadata_refcounts[4], {{g_bytes + 29, 7}}},
+     {&grpc_static_metadata_refcounts[45], {{g_bytes + 547, 4}}}},
+    {{&grpc_static_metadata_refcounts[4], {{g_bytes + 29, 7}}},
+     {&grpc_static_metadata_refcounts[46], {{g_bytes + 551, 5}}}},
+    {{&grpc_static_metadata_refcounts[4], {{g_bytes + 29, 7}}},
+     {&grpc_static_metadata_refcounts[47], {{g_bytes + 556, 4}}}},
+    {{&grpc_static_metadata_refcounts[3], {{g_bytes + 19, 10}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[1], {{g_bytes + 5, 7}}},
+     {&grpc_static_metadata_refcounts[48], {{g_bytes + 560, 3}}}},
+    {{&grpc_static_metadata_refcounts[1], {{g_bytes + 5, 7}}},
+     {&grpc_static_metadata_refcounts[49], {{g_bytes + 563, 3}}}},
+    {{&grpc_static_metadata_refcounts[0], {{g_bytes + 0, 5}}},
+     {&grpc_static_metadata_refcounts[50], {{g_bytes + 566, 1}}}},
+    {{&grpc_static_metadata_refcounts[0], {{g_bytes + 0, 5}}},
+     {&grpc_static_metadata_refcounts[51], {{g_bytes + 567, 11}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[52], {{g_bytes + 578, 3}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[53], {{g_bytes + 581, 3}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[54], {{g_bytes + 584, 3}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[55], {{g_bytes + 587, 3}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[56], {{g_bytes + 590, 3}}}},
+    {{&grpc_static_metadata_refcounts[57], {{g_bytes + 593, 14}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+     {&grpc_static_metadata_refcounts[58], {{g_bytes + 607, 13}}}},
+    {{&grpc_static_metadata_refcounts[59], {{g_bytes + 620, 15}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[60], {{g_bytes + 635, 13}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[61], {{g_bytes + 648, 6}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[62], {{g_bytes + 654, 27}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[63], {{g_bytes + 681, 3}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[64], {{g_bytes + 684, 5}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[65], {{g_bytes + 689, 13}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[66], {{g_bytes + 702, 13}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[67], {{g_bytes + 715, 19}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[15], {{g_bytes + 170, 16}}},
+     {&grpc_static_metadata_refcounts[39], {{g_bytes + 505, 8}}}},
+    {{&grpc_static_metadata_refcounts[15], {{g_bytes + 170, 16}}},
+     {&grpc_static_metadata_refcounts[36], {{g_bytes + 489, 4}}}},
+    {{&grpc_static_metadata_refcounts[15], {{g_bytes + 170, 16}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[68], {{g_bytes + 734, 16}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[69], {{g_bytes + 750, 14}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[70], {{g_bytes + 764, 16}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[71], {{g_bytes + 780, 13}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[14], {{g_bytes + 158, 12}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[72], {{g_bytes + 793, 6}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[73], {{g_bytes + 799, 4}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[74], {{g_bytes + 803, 4}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[75], {{g_bytes + 807, 6}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[76], {{g_bytes + 813, 7}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[77], {{g_bytes + 820, 4}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[20], {{g_bytes + 278, 4}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[78], {{g_bytes + 824, 8}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[79], {{g_bytes + 832, 17}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[80], {{g_bytes + 849, 13}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[81], {{g_bytes + 862, 8}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[82], {{g_bytes + 870, 19}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[83], {{g_bytes + 889, 13}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[21], {{g_bytes + 282, 8}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[84], {{g_bytes + 902, 11}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[85], {{g_bytes + 913, 4}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[86], {{g_bytes + 917, 8}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[87], {{g_bytes + 925, 12}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[88], {{g_bytes + 937, 18}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[89], {{g_bytes + 955, 19}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[90], {{g_bytes + 974, 5}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[91], {{g_bytes + 979, 7}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[92], {{g_bytes + 986, 7}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[93], {{g_bytes + 993, 11}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[94], {{g_bytes + 1004, 6}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[95], {{g_bytes + 1010, 10}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[96], {{g_bytes + 1020, 25}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[97], {{g_bytes + 1045, 17}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[19], {{g_bytes + 268, 10}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[98], {{g_bytes + 1062, 4}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[99], {{g_bytes + 1066, 3}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[100], {{g_bytes + 1069, 16}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 354, 0}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[39], {{g_bytes + 505, 8}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[35], {{g_bytes + 482, 7}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[101], {{g_bytes + 1085, 16}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[36], {{g_bytes + 489, 4}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[102], {{g_bytes + 1101, 13}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[103], {{g_bytes + 1114, 12}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[104], {{g_bytes + 1126, 21}}}},
+    {{&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+     {&grpc_static_metadata_refcounts[39], {{g_bytes + 505, 8}}}},
+    {{&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+     {&grpc_static_metadata_refcounts[36], {{g_bytes + 489, 4}}}},
+    {{&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+     {&grpc_static_metadata_refcounts[102], {{g_bytes + 1101, 13}}}},
 };
 bool grpc_static_callout_is_default[GRPC_BATCH_CALLOUTS_COUNT] = {
-  true, // :path
-  true, // :method
-  true, // :status
-  true, // :authority
-  true, // :scheme
-  true, // te
-  true, // grpc-message
-  true, // grpc-status
-  true, // grpc-payload-bin
-  true, // grpc-encoding
-  true, // grpc-accept-encoding
-  true, // grpc-server-stats-bin
-  true, // grpc-tags-bin
-  true, // grpc-trace-bin
-  true, // content-type
-  true, // content-encoding
-  true, // accept-encoding
-  true, // grpc-internal-encoding-request
-  true, // grpc-internal-stream-encoding-request
-  true, // user-agent
-  true, // host
-  true, // lb-token
-  true, // grpc-previous-rpc-attempts
-  true, // grpc-retry-pushback-ms
+    true,  // :path
+    true,  // :method
+    true,  // :status
+    true,  // :authority
+    true,  // :scheme
+    true,  // te
+    true,  // grpc-message
+    true,  // grpc-status
+    true,  // grpc-payload-bin
+    true,  // grpc-encoding
+    true,  // grpc-accept-encoding
+    true,  // grpc-server-stats-bin
+    true,  // grpc-tags-bin
+    true,  // grpc-trace-bin
+    true,  // content-type
+    true,  // content-encoding
+    true,  // accept-encoding
+    true,  // grpc-internal-encoding-request
+    true,  // grpc-internal-stream-encoding-request
+    true,  // user-agent
+    true,  // host
+    true,  // lb-token
+    true,  // grpc-previous-rpc-attempts
+    true,  // grpc-retry-pushback-ms
 };
 
-const uint8_t grpc_static_accept_encoding_metadata[8] = {
-0,76,77,78,79,80,81,82
-};
+const uint8_t grpc_static_accept_encoding_metadata[8] = {0,  76, 77, 78,
+                                                         79, 80, 81, 82};
 
-const uint8_t grpc_static_accept_stream_encoding_metadata[4] = {
-0,83,84,85
-};
+const uint8_t grpc_static_accept_stream_encoding_metadata[4] = {0, 83, 84, 85};
diff --git a/src/core/lib/transport/static_metadata.h b/src/core/lib/transport/static_metadata.h
index 333bc789d6..0fc154d1a1 100644
--- a/src/core/lib/transport/static_metadata.h
+++ b/src/core/lib/transport/static_metadata.h
@@ -1,12 +1,12 @@
 /*
  * Copyright 2015 gRPC authors.
- * 
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *     http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -16,10 +16,10 @@
 
 /*
  * WARNING: Auto-generated code.
- * 
+ *
  * To make changes to this file, change
  * tools/codegen/core/gen_static_metadata.py, and then re-run it.
- * 
+ *
  * See metadata.h for an explanation of the interface here, and metadata.cc for
  * an explanation of what's going on.
  */
@@ -68,7 +68,8 @@ extern const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT];
 /* "grpc-internal-encoding-request" */
 #define GRPC_MDSTR_GRPC_INTERNAL_ENCODING_REQUEST (grpc_static_slice_table[17])
 /* "grpc-internal-stream-encoding-request" */
-#define GRPC_MDSTR_GRPC_INTERNAL_STREAM_ENCODING_REQUEST (grpc_static_slice_table[18])
+#define GRPC_MDSTR_GRPC_INTERNAL_STREAM_ENCODING_REQUEST \
+  (grpc_static_slice_table[18])
 /* "user-agent" */
 #define GRPC_MDSTR_USER_AGENT (grpc_static_slice_table[19])
 /* "host" */
@@ -96,11 +97,14 @@ extern const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT];
 /* "grpc.timeout" */
 #define GRPC_MDSTR_GRPC_DOT_TIMEOUT (grpc_static_slice_table[31])
 /* "grpc.max_request_message_bytes" */
-#define GRPC_MDSTR_GRPC_DOT_MAX_REQUEST_MESSAGE_BYTES (grpc_static_slice_table[32])
+#define GRPC_MDSTR_GRPC_DOT_MAX_REQUEST_MESSAGE_BYTES \
+  (grpc_static_slice_table[32])
 /* "grpc.max_response_message_bytes" */
-#define GRPC_MDSTR_GRPC_DOT_MAX_RESPONSE_MESSAGE_BYTES (grpc_static_slice_table[33])
+#define GRPC_MDSTR_GRPC_DOT_MAX_RESPONSE_MESSAGE_BYTES \
+  (grpc_static_slice_table[33])
 /* "/grpc.lb.v1.LoadBalancer/BalanceLoad" */
-#define GRPC_MDSTR_SLASH_GRPC_DOT_LB_DOT_V1_DOT_LOADBALANCER_SLASH_BALANCELOAD (grpc_static_slice_table[34])
+#define GRPC_MDSTR_SLASH_GRPC_DOT_LB_DOT_V1_DOT_LOADBALANCER_SLASH_BALANCELOAD \
+  (grpc_static_slice_table[34])
 /* "deflate" */
 #define GRPC_MDSTR_DEFLATE (grpc_static_slice_table[35])
 /* "gzip" */
@@ -240,12 +244,15 @@ extern const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT];
 /* "deflate,gzip" */
 #define GRPC_MDSTR_DEFLATE_COMMA_GZIP (grpc_static_slice_table[103])
 /* "identity,deflate,gzip" */
-#define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE_COMMA_GZIP (grpc_static_slice_table[104])
+#define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE_COMMA_GZIP \
+  (grpc_static_slice_table[104])
 
 extern const grpc_slice_refcount_vtable grpc_static_metadata_vtable;
-extern grpc_slice_refcount grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT];
+extern grpc_slice_refcount
+    grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT];
 #define GRPC_IS_STATIC_METADATA_STRING(slice) \
-  ((slice).refcount != NULL && (slice).refcount->vtable == &grpc_static_metadata_vtable)
+  ((slice).refcount != NULL &&                \
+   (slice).refcount->vtable == &grpc_static_metadata_vtable)
 
 #define GRPC_STATIC_METADATA_INDEX(static_slice) \
   ((int)((static_slice).refcount - grpc_static_metadata_refcounts))
@@ -254,177 +261,349 @@ extern grpc_slice_refcount grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUN
 extern grpc_mdelem_data grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];
 extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];
 /* "grpc-status": "0" Index="0" */
-#define GRPC_MDELEM_GRPC_STATUS_0 (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[0], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_STATUS_0                                             \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[0], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "grpc-status": "1" Index="0" */
-#define GRPC_MDELEM_GRPC_STATUS_1 (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[1], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_STATUS_1                                             \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[1], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "grpc-status": "2" Index="0" */
-#define GRPC_MDELEM_GRPC_STATUS_2 (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[2], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_STATUS_2                                             \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[2], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "grpc-encoding": "identity" Index="0" */
-#define GRPC_MDELEM_GRPC_ENCODING_IDENTITY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[3], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_ENCODING_IDENTITY                                    \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[3], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "grpc-encoding": "gzip" Index="0" */
-#define GRPC_MDELEM_GRPC_ENCODING_GZIP (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[4], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_ENCODING_GZIP                                        \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[4], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "grpc-encoding": "deflate" Index="0" */
-#define GRPC_MDELEM_GRPC_ENCODING_DEFLATE (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[5], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_ENCODING_DEFLATE                                     \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[5], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "te": "trailers" Index="0" */
-#define GRPC_MDELEM_TE_TRAILERS (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[6], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_TE_TRAILERS                                               \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[6], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "content-type": "application/grpc" Index="0" */
-#define GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[7], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC                       \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[7], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* ":method": "POST" Index="3" */
-#define GRPC_MDELEM_METHOD_POST (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[8], GRPC_MDELEM_STORAGE_STATIC), 3)
+#define GRPC_MDELEM_METHOD_POST                                               \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[8], GRPC_MDELEM_STORAGE_STATIC, \
+                    3))
 /* ":status": "200" Index="8" */
-#define GRPC_MDELEM_STATUS_200 (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[9], GRPC_MDELEM_STORAGE_STATIC), 8)
+#define GRPC_MDELEM_STATUS_200                                                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[9], GRPC_MDELEM_STORAGE_STATIC, \
+                    8))
 /* ":status": "404" Index="13" */
-#define GRPC_MDELEM_STATUS_404 (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[10], GRPC_MDELEM_STORAGE_STATIC), 13)
+#define GRPC_MDELEM_STATUS_404                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[10], GRPC_MDELEM_STORAGE_STATIC, \
+                    13))
 /* ":scheme": "http" Index="6" */
-#define GRPC_MDELEM_SCHEME_HTTP (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[11], GRPC_MDELEM_STORAGE_STATIC), 6)
+#define GRPC_MDELEM_SCHEME_HTTP                                                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[11], GRPC_MDELEM_STORAGE_STATIC, \
+                    6))
 /* ":scheme": "https" Index="7" */
-#define GRPC_MDELEM_SCHEME_HTTPS (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[12], GRPC_MDELEM_STORAGE_STATIC), 7)
+#define GRPC_MDELEM_SCHEME_HTTPS                                               \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[12], GRPC_MDELEM_STORAGE_STATIC, \
+                    7))
 /* ":scheme": "grpc" Index="0" */
-#define GRPC_MDELEM_SCHEME_GRPC (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[13], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_SCHEME_GRPC                                                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[13], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* ":authority": "" Index="1" */
-#define GRPC_MDELEM_AUTHORITY_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[14], GRPC_MDELEM_STORAGE_STATIC), 1)
+#define GRPC_MDELEM_AUTHORITY_EMPTY                                            \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[14], GRPC_MDELEM_STORAGE_STATIC, \
+                    1))
 /* ":method": "GET" Index="2" */
-#define GRPC_MDELEM_METHOD_GET (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[15], GRPC_MDELEM_STORAGE_STATIC), 2)
+#define GRPC_MDELEM_METHOD_GET                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[15], GRPC_MDELEM_STORAGE_STATIC, \
+                    2))
 /* ":method": "PUT" Index="0" */
-#define GRPC_MDELEM_METHOD_PUT (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[16], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_METHOD_PUT                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[16], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* ":path": "/" Index="4" */
-#define GRPC_MDELEM_PATH_SLASH (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[17], GRPC_MDELEM_STORAGE_STATIC), 4)
+#define GRPC_MDELEM_PATH_SLASH                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[17], GRPC_MDELEM_STORAGE_STATIC, \
+                    4))
 /* ":path": "/index.html" Index="5" */
-#define GRPC_MDELEM_PATH_SLASH_INDEX_DOT_HTML (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[18], GRPC_MDELEM_STORAGE_STATIC), 5)
+#define GRPC_MDELEM_PATH_SLASH_INDEX_DOT_HTML                                  \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[18], GRPC_MDELEM_STORAGE_STATIC, \
+                    5))
 /* ":status": "204" Index="9" */
-#define GRPC_MDELEM_STATUS_204 (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[19], GRPC_MDELEM_STORAGE_STATIC), 9)
+#define GRPC_MDELEM_STATUS_204                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[19], GRPC_MDELEM_STORAGE_STATIC, \
+                    9))
 /* ":status": "206" Index="10" */
-#define GRPC_MDELEM_STATUS_206 (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[20], GRPC_MDELEM_STORAGE_STATIC), 10)
+#define GRPC_MDELEM_STATUS_206                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[20], GRPC_MDELEM_STORAGE_STATIC, \
+                    10))
 /* ":status": "304" Index="11" */
-#define GRPC_MDELEM_STATUS_304 (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[21], GRPC_MDELEM_STORAGE_STATIC), 11)
+#define GRPC_MDELEM_STATUS_304                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[21], GRPC_MDELEM_STORAGE_STATIC, \
+                    11))
 /* ":status": "400" Index="12" */
-#define GRPC_MDELEM_STATUS_400 (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[22], GRPC_MDELEM_STORAGE_STATIC), 12)
+#define GRPC_MDELEM_STATUS_400                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[22], GRPC_MDELEM_STORAGE_STATIC, \
+                    12))
 /* ":status": "500" Index="14" */
-#define GRPC_MDELEM_STATUS_500 (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[23], GRPC_MDELEM_STORAGE_STATIC), 14)
+#define GRPC_MDELEM_STATUS_500                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[23], GRPC_MDELEM_STORAGE_STATIC, \
+                    14))
 /* "accept-charset": "" Index="15" */
-#define GRPC_MDELEM_ACCEPT_CHARSET_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[24], GRPC_MDELEM_STORAGE_STATIC), 15)
+#define GRPC_MDELEM_ACCEPT_CHARSET_EMPTY                                       \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[24], GRPC_MDELEM_STORAGE_STATIC, \
+                    15))
 /* "accept-encoding": "" Index="0" */
-#define GRPC_MDELEM_ACCEPT_ENCODING_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[25], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_ACCEPT_ENCODING_EMPTY                                      \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[25], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "accept-encoding": "gzip, deflate" Index="16" */
-#define GRPC_MDELEM_ACCEPT_ENCODING_GZIP_COMMA_DEFLATE (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[26], GRPC_MDELEM_STORAGE_STATIC), 16)
+#define GRPC_MDELEM_ACCEPT_ENCODING_GZIP_COMMA_DEFLATE                         \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[26], GRPC_MDELEM_STORAGE_STATIC, \
+                    16))
 /* "accept-language": "" Index="17" */
-#define GRPC_MDELEM_ACCEPT_LANGUAGE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[27], GRPC_MDELEM_STORAGE_STATIC), 17)
+#define GRPC_MDELEM_ACCEPT_LANGUAGE_EMPTY                                      \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[27], GRPC_MDELEM_STORAGE_STATIC, \
+                    17))
 /* "accept-ranges": "" Index="18" */
-#define GRPC_MDELEM_ACCEPT_RANGES_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[28], GRPC_MDELEM_STORAGE_STATIC), 18)
+#define GRPC_MDELEM_ACCEPT_RANGES_EMPTY                                        \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[28], GRPC_MDELEM_STORAGE_STATIC, \
+                    18))
 /* "accept": "" Index="19" */
-#define GRPC_MDELEM_ACCEPT_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[29], GRPC_MDELEM_STORAGE_STATIC), 19)
+#define GRPC_MDELEM_ACCEPT_EMPTY                                               \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[29], GRPC_MDELEM_STORAGE_STATIC, \
+                    19))
 /* "access-control-allow-origin": "" Index="20" */
-#define GRPC_MDELEM_ACCESS_CONTROL_ALLOW_ORIGIN_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[30], GRPC_MDELEM_STORAGE_STATIC), 20)
+#define GRPC_MDELEM_ACCESS_CONTROL_ALLOW_ORIGIN_EMPTY                          \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[30], GRPC_MDELEM_STORAGE_STATIC, \
+                    20))
 /* "age": "" Index="21" */
-#define GRPC_MDELEM_AGE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[31], GRPC_MDELEM_STORAGE_STATIC), 21)
+#define GRPC_MDELEM_AGE_EMPTY                                                  \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[31], GRPC_MDELEM_STORAGE_STATIC, \
+                    21))
 /* "allow": "" Index="22" */
-#define GRPC_MDELEM_ALLOW_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[32], GRPC_MDELEM_STORAGE_STATIC), 22)
+#define GRPC_MDELEM_ALLOW_EMPTY                                                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[32], GRPC_MDELEM_STORAGE_STATIC, \
+                    22))
 /* "authorization": "" Index="23" */
-#define GRPC_MDELEM_AUTHORIZATION_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[33], GRPC_MDELEM_STORAGE_STATIC), 23)
+#define GRPC_MDELEM_AUTHORIZATION_EMPTY                                        \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[33], GRPC_MDELEM_STORAGE_STATIC, \
+                    23))
 /* "cache-control": "" Index="24" */
-#define GRPC_MDELEM_CACHE_CONTROL_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[34], GRPC_MDELEM_STORAGE_STATIC), 24)
+#define GRPC_MDELEM_CACHE_CONTROL_EMPTY                                        \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[34], GRPC_MDELEM_STORAGE_STATIC, \
+                    24))
 /* "content-disposition": "" Index="25" */
-#define GRPC_MDELEM_CONTENT_DISPOSITION_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[35], GRPC_MDELEM_STORAGE_STATIC), 25)
+#define GRPC_MDELEM_CONTENT_DISPOSITION_EMPTY                                  \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[35], GRPC_MDELEM_STORAGE_STATIC, \
+                    25))
 /* "content-encoding": "identity" Index="0" */
-#define GRPC_MDELEM_CONTENT_ENCODING_IDENTITY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[36], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_CONTENT_ENCODING_IDENTITY                                  \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[36], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "content-encoding": "gzip" Index="0" */
-#define GRPC_MDELEM_CONTENT_ENCODING_GZIP (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[37], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_CONTENT_ENCODING_GZIP                                      \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[37], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "content-encoding": "" Index="26" */
-#define GRPC_MDELEM_CONTENT_ENCODING_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[38], GRPC_MDELEM_STORAGE_STATIC), 26)
+#define GRPC_MDELEM_CONTENT_ENCODING_EMPTY                                     \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[38], GRPC_MDELEM_STORAGE_STATIC, \
+                    26))
 /* "content-language": "" Index="27" */
-#define GRPC_MDELEM_CONTENT_LANGUAGE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[39], GRPC_MDELEM_STORAGE_STATIC), 27)
+#define GRPC_MDELEM_CONTENT_LANGUAGE_EMPTY                                     \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[39], GRPC_MDELEM_STORAGE_STATIC, \
+                    27))
 /* "content-length": "" Index="28" */
-#define GRPC_MDELEM_CONTENT_LENGTH_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[40], GRPC_MDELEM_STORAGE_STATIC), 28)
+#define GRPC_MDELEM_CONTENT_LENGTH_EMPTY                                       \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[40], GRPC_MDELEM_STORAGE_STATIC, \
+                    28))
 /* "content-location": "" Index="29" */
-#define GRPC_MDELEM_CONTENT_LOCATION_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[41], GRPC_MDELEM_STORAGE_STATIC), 29)
+#define GRPC_MDELEM_CONTENT_LOCATION_EMPTY                                     \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[41], GRPC_MDELEM_STORAGE_STATIC, \
+                    29))
 /* "content-range": "" Index="30" */
-#define GRPC_MDELEM_CONTENT_RANGE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[42], GRPC_MDELEM_STORAGE_STATIC), 30)
+#define GRPC_MDELEM_CONTENT_RANGE_EMPTY                                        \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[42], GRPC_MDELEM_STORAGE_STATIC, \
+                    30))
 /* "content-type": "" Index="31" */
-#define GRPC_MDELEM_CONTENT_TYPE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[43], GRPC_MDELEM_STORAGE_STATIC), 31)
+#define GRPC_MDELEM_CONTENT_TYPE_EMPTY                                         \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[43], GRPC_MDELEM_STORAGE_STATIC, \
+                    31))
 /* "cookie": "" Index="32" */
-#define GRPC_MDELEM_COOKIE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[44], GRPC_MDELEM_STORAGE_STATIC), 32)
+#define GRPC_MDELEM_COOKIE_EMPTY                                               \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[44], GRPC_MDELEM_STORAGE_STATIC, \
+                    32))
 /* "date": "" Index="33" */
-#define GRPC_MDELEM_DATE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[45], GRPC_MDELEM_STORAGE_STATIC), 33)
+#define GRPC_MDELEM_DATE_EMPTY                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[45], GRPC_MDELEM_STORAGE_STATIC, \
+                    33))
 /* "etag": "" Index="34" */
-#define GRPC_MDELEM_ETAG_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[46], GRPC_MDELEM_STORAGE_STATIC), 34)
+#define GRPC_MDELEM_ETAG_EMPTY                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[46], GRPC_MDELEM_STORAGE_STATIC, \
+                    34))
 /* "expect": "" Index="35" */
-#define GRPC_MDELEM_EXPECT_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[47], GRPC_MDELEM_STORAGE_STATIC), 35)
+#define GRPC_MDELEM_EXPECT_EMPTY                                               \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[47], GRPC_MDELEM_STORAGE_STATIC, \
+                    35))
 /* "expires": "" Index="36" */
-#define GRPC_MDELEM_EXPIRES_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[48], GRPC_MDELEM_STORAGE_STATIC), 36)
+#define GRPC_MDELEM_EXPIRES_EMPTY                                              \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[48], GRPC_MDELEM_STORAGE_STATIC, \
+                    36))
 /* "from": "" Index="37" */
-#define GRPC_MDELEM_FROM_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[49], GRPC_MDELEM_STORAGE_STATIC), 37)
+#define GRPC_MDELEM_FROM_EMPTY                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[49], GRPC_MDELEM_STORAGE_STATIC, \
+                    37))
 /* "host": "" Index="38" */
-#define GRPC_MDELEM_HOST_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[50], GRPC_MDELEM_STORAGE_STATIC), 38)
+#define GRPC_MDELEM_HOST_EMPTY                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[50], GRPC_MDELEM_STORAGE_STATIC, \
+                    38))
 /* "if-match": "" Index="39" */
-#define GRPC_MDELEM_IF_MATCH_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[51], GRPC_MDELEM_STORAGE_STATIC), 39)
+#define GRPC_MDELEM_IF_MATCH_EMPTY                                             \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[51], GRPC_MDELEM_STORAGE_STATIC, \
+                    39))
 /* "if-modified-since": "" Index="40" */
-#define GRPC_MDELEM_IF_MODIFIED_SINCE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[52], GRPC_MDELEM_STORAGE_STATIC), 40)
+#define GRPC_MDELEM_IF_MODIFIED_SINCE_EMPTY                                    \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[52], GRPC_MDELEM_STORAGE_STATIC, \
+                    40))
 /* "if-none-match": "" Index="41" */
-#define GRPC_MDELEM_IF_NONE_MATCH_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[53], GRPC_MDELEM_STORAGE_STATIC), 41)
+#define GRPC_MDELEM_IF_NONE_MATCH_EMPTY                                        \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[53], GRPC_MDELEM_STORAGE_STATIC, \
+                    41))
 /* "if-range": "" Index="42" */
-#define GRPC_MDELEM_IF_RANGE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[54], GRPC_MDELEM_STORAGE_STATIC), 42)
+#define GRPC_MDELEM_IF_RANGE_EMPTY                                             \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[54], GRPC_MDELEM_STORAGE_STATIC, \
+                    42))
 /* "if-unmodified-since": "" Index="43" */
-#define GRPC_MDELEM_IF_UNMODIFIED_SINCE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[55], GRPC_MDELEM_STORAGE_STATIC), 43)
+#define GRPC_MDELEM_IF_UNMODIFIED_SINCE_EMPTY                                  \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[55], GRPC_MDELEM_STORAGE_STATIC, \
+                    43))
 /* "last-modified": "" Index="44" */
-#define GRPC_MDELEM_LAST_MODIFIED_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[56], GRPC_MDELEM_STORAGE_STATIC), 44)
+#define GRPC_MDELEM_LAST_MODIFIED_EMPTY                                        \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[56], GRPC_MDELEM_STORAGE_STATIC, \
+                    44))
 /* "lb-token": "" Index="0" */
-#define GRPC_MDELEM_LB_TOKEN_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[57], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_LB_TOKEN_EMPTY                                             \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[57], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "lb-cost-bin": "" Index="0" */
-#define GRPC_MDELEM_LB_COST_BIN_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[58], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_LB_COST_BIN_EMPTY                                          \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[58], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "link": "" Index="45" */
-#define GRPC_MDELEM_LINK_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[59], GRPC_MDELEM_STORAGE_STATIC), 45)
+#define GRPC_MDELEM_LINK_EMPTY                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[59], GRPC_MDELEM_STORAGE_STATIC, \
+                    45))
 /* "location": "" Index="46" */
-#define GRPC_MDELEM_LOCATION_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[60], GRPC_MDELEM_STORAGE_STATIC), 46)
+#define GRPC_MDELEM_LOCATION_EMPTY                                             \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[60], GRPC_MDELEM_STORAGE_STATIC, \
+                    46))
 /* "max-forwards": "" Index="47" */
-#define GRPC_MDELEM_MAX_FORWARDS_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[61], GRPC_MDELEM_STORAGE_STATIC), 47)
+#define GRPC_MDELEM_MAX_FORWARDS_EMPTY                                         \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[61], GRPC_MDELEM_STORAGE_STATIC, \
+                    47))
 /* "proxy-authenticate": "" Index="48" */
-#define GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[62], GRPC_MDELEM_STORAGE_STATIC), 48)
+#define GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY                                   \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[62], GRPC_MDELEM_STORAGE_STATIC, \
+                    48))
 /* "proxy-authorization": "" Index="49" */
-#define GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[63], GRPC_MDELEM_STORAGE_STATIC), 49)
+#define GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY                                  \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[63], GRPC_MDELEM_STORAGE_STATIC, \
+                    49))
 /* "range": "" Index="50" */
-#define GRPC_MDELEM_RANGE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[64], GRPC_MDELEM_STORAGE_STATIC), 50)
+#define GRPC_MDELEM_RANGE_EMPTY                                                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[64], GRPC_MDELEM_STORAGE_STATIC, \
+                    50))
 /* "referer": "" Index="51" */
-#define GRPC_MDELEM_REFERER_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[65], GRPC_MDELEM_STORAGE_STATIC), 51)
+#define GRPC_MDELEM_REFERER_EMPTY                                              \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[65], GRPC_MDELEM_STORAGE_STATIC, \
+                    51))
 /* "refresh": "" Index="52" */
-#define GRPC_MDELEM_REFRESH_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[66], GRPC_MDELEM_STORAGE_STATIC), 52)
+#define GRPC_MDELEM_REFRESH_EMPTY                                              \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[66], GRPC_MDELEM_STORAGE_STATIC, \
+                    52))
 /* "retry-after": "" Index="53" */
-#define GRPC_MDELEM_RETRY_AFTER_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[67], GRPC_MDELEM_STORAGE_STATIC), 53)
+#define GRPC_MDELEM_RETRY_AFTER_EMPTY                                          \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[67], GRPC_MDELEM_STORAGE_STATIC, \
+                    53))
 /* "server": "" Index="54" */
-#define GRPC_MDELEM_SERVER_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[68], GRPC_MDELEM_STORAGE_STATIC), 54)
+#define GRPC_MDELEM_SERVER_EMPTY                                               \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[68], GRPC_MDELEM_STORAGE_STATIC, \
+                    54))
 /* "set-cookie": "" Index="55" */
-#define GRPC_MDELEM_SET_COOKIE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[69], GRPC_MDELEM_STORAGE_STATIC), 55)
+#define GRPC_MDELEM_SET_COOKIE_EMPTY                                           \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[69], GRPC_MDELEM_STORAGE_STATIC, \
+                    55))
 /* "strict-transport-security": "" Index="56" */
-#define GRPC_MDELEM_STRICT_TRANSPORT_SECURITY_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[70], GRPC_MDELEM_STORAGE_STATIC), 56)
+#define GRPC_MDELEM_STRICT_TRANSPORT_SECURITY_EMPTY                            \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[70], GRPC_MDELEM_STORAGE_STATIC, \
+                    56))
 /* "transfer-encoding": "" Index="57" */
-#define GRPC_MDELEM_TRANSFER_ENCODING_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[71], GRPC_MDELEM_STORAGE_STATIC), 57)
+#define GRPC_MDELEM_TRANSFER_ENCODING_EMPTY                                    \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[71], GRPC_MDELEM_STORAGE_STATIC, \
+                    57))
 /* "user-agent": "" Index="58" */
-#define GRPC_MDELEM_USER_AGENT_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[72], GRPC_MDELEM_STORAGE_STATIC), 58)
+#define GRPC_MDELEM_USER_AGENT_EMPTY                                           \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[72], GRPC_MDELEM_STORAGE_STATIC, \
+                    58))
 /* "vary": "" Index="59" */
-#define GRPC_MDELEM_VARY_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[73], GRPC_MDELEM_STORAGE_STATIC), 59)
+#define GRPC_MDELEM_VARY_EMPTY                                                 \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[73], GRPC_MDELEM_STORAGE_STATIC, \
+                    59))
 /* "via": "" Index="60" */
-#define GRPC_MDELEM_VIA_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[74], GRPC_MDELEM_STORAGE_STATIC), 60)
+#define GRPC_MDELEM_VIA_EMPTY                                                  \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[74], GRPC_MDELEM_STORAGE_STATIC, \
+                    60))
 /* "www-authenticate": "" Index="61" */
-#define GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[75], GRPC_MDELEM_STORAGE_STATIC), 61)
+#define GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY                                     \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[75], GRPC_MDELEM_STORAGE_STATIC, \
+                    61))
 /* "grpc-accept-encoding": "identity" Index="0" */
-#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[76], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY                              \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[76], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "grpc-accept-encoding": "deflate" Index="0" */
-#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[77], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE                               \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[77], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "grpc-accept-encoding": "identity,deflate" Index="0" */
-#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[78], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[78], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "grpc-accept-encoding": "gzip" Index="0" */
-#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_GZIP (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[79], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_GZIP                                  \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[79], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "grpc-accept-encoding": "identity,gzip" Index="0" */
-#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[80], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP                   \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[80], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "grpc-accept-encoding": "deflate,gzip" Index="0" */
-#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE_COMMA_GZIP (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[81], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE_COMMA_GZIP                    \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[81], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "grpc-accept-encoding": "identity,deflate,gzip" Index="0" */
-#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE_COMMA_GZIP (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[82], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE_COMMA_GZIP     \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[82], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "accept-encoding": "identity" Index="0" */
-#define GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[83], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY                                   \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[83], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "accept-encoding": "gzip" Index="0" */
-#define GRPC_MDELEM_ACCEPT_ENCODING_GZIP (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[84], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_ACCEPT_ENCODING_GZIP                                       \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[84], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 /* "accept-encoding": "identity,gzip" Index="0" */
-#define GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[85], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP                        \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[85], GRPC_MDELEM_STORAGE_STATIC, \
+                    0))
 
 grpc_mdelem grpc_static_mdelem_for_static_strings(int a, int b);
 typedef enum {
@@ -456,43 +635,53 @@ typedef enum {
 } grpc_metadata_batch_callouts_index;
 
 typedef union {
-  struct grpc_linked_mdelem *array[GRPC_BATCH_CALLOUTS_COUNT];
+  struct grpc_linked_mdelem* array[GRPC_BATCH_CALLOUTS_COUNT];
   struct {
-  struct grpc_linked_mdelem *path;
-  struct grpc_linked_mdelem *method;
-  struct grpc_linked_mdelem *status;
-  struct grpc_linked_mdelem *authority;
-  struct grpc_linked_mdelem *scheme;
-  struct grpc_linked_mdelem *te;
-  struct grpc_linked_mdelem *grpc_message;
-  struct grpc_linked_mdelem *grpc_status;
-  struct grpc_linked_mdelem *grpc_payload_bin;
-  struct grpc_linked_mdelem *grpc_encoding;
-  struct grpc_linked_mdelem *grpc_accept_encoding;
-  struct grpc_linked_mdelem *grpc_server_stats_bin;
-  struct grpc_linked_mdelem *grpc_tags_bin;
-  struct grpc_linked_mdelem *grpc_trace_bin;
-  struct grpc_linked_mdelem *content_type;
-  struct grpc_linked_mdelem *content_encoding;
-  struct grpc_linked_mdelem *accept_encoding;
-  struct grpc_linked_mdelem *grpc_internal_encoding_request;
-  struct grpc_linked_mdelem *grpc_internal_stream_encoding_request;
-  struct grpc_linked_mdelem *user_agent;
-  struct grpc_linked_mdelem *host;
-  struct grpc_linked_mdelem *lb_token;
-  struct grpc_linked_mdelem *grpc_previous_rpc_attempts;
-  struct grpc_linked_mdelem *grpc_retry_pushback_ms;
+    struct grpc_linked_mdelem* path;
+    struct grpc_linked_mdelem* method;
+    struct grpc_linked_mdelem* status;
+    struct grpc_linked_mdelem* authority;
+    struct grpc_linked_mdelem* scheme;
+    struct grpc_linked_mdelem* te;
+    struct grpc_linked_mdelem* grpc_message;
+    struct grpc_linked_mdelem* grpc_status;
+    struct grpc_linked_mdelem* grpc_payload_bin;
+    struct grpc_linked_mdelem* grpc_encoding;
+    struct grpc_linked_mdelem* grpc_accept_encoding;
+    struct grpc_linked_mdelem* grpc_server_stats_bin;
+    struct grpc_linked_mdelem* grpc_tags_bin;
+    struct grpc_linked_mdelem* grpc_trace_bin;
+    struct grpc_linked_mdelem* content_type;
+    struct grpc_linked_mdelem* content_encoding;
+    struct grpc_linked_mdelem* accept_encoding;
+    struct grpc_linked_mdelem* grpc_internal_encoding_request;
+    struct grpc_linked_mdelem* grpc_internal_stream_encoding_request;
+    struct grpc_linked_mdelem* user_agent;
+    struct grpc_linked_mdelem* host;
+    struct grpc_linked_mdelem* lb_token;
+    struct grpc_linked_mdelem* grpc_previous_rpc_attempts;
+    struct grpc_linked_mdelem* grpc_retry_pushback_ms;
   } named;
 } grpc_metadata_batch_callouts;
 
-#define GRPC_BATCH_INDEX_OF(slice) \
-  (GRPC_IS_STATIC_METADATA_STRING((slice)) ? (grpc_metadata_batch_callouts_index)GPR_CLAMP(GRPC_STATIC_METADATA_INDEX((slice)), 0, GRPC_BATCH_CALLOUTS_COUNT) : GRPC_BATCH_CALLOUTS_COUNT)
+#define GRPC_BATCH_INDEX_OF(slice)                      \
+  (GRPC_IS_STATIC_METADATA_STRING((slice))              \
+       ? (grpc_metadata_batch_callouts_index)GPR_CLAMP( \
+             GRPC_STATIC_METADATA_INDEX((slice)), 0,    \
+             GRPC_BATCH_CALLOUTS_COUNT)                 \
+       : GRPC_BATCH_CALLOUTS_COUNT)
 
 extern bool grpc_static_callout_is_default[GRPC_BATCH_CALLOUTS_COUNT];
 
 extern const uint8_t grpc_static_accept_encoding_metadata[8];
-#define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs) (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[grpc_static_accept_encoding_metadata[(algs)]], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs)                       \
+  (GRPC_MAKE_MDELEM(                                                           \
+      &grpc_static_mdelem_table[grpc_static_accept_encoding_metadata[(algs)]], \
+      GRPC_MDELEM_STORAGE_STATIC, 0))
 
 extern const uint8_t grpc_static_accept_stream_encoding_metadata[4];
-#define GRPC_MDELEM_ACCEPT_STREAM_ENCODING_FOR_ALGORITHMS(algs) (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[grpc_static_accept_stream_encoding_metadata[(algs)]], GRPC_MDELEM_STORAGE_STATIC), 0)
+#define GRPC_MDELEM_ACCEPT_STREAM_ENCODING_FOR_ALGORITHMS(algs)                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table                                  \
+                        [grpc_static_accept_stream_encoding_metadata[(algs)]], \
+                    GRPC_MDELEM_STORAGE_STATIC, 0))
 #endif /* GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H */
diff --git a/src/core/lib/transport/transport_op_string.cc b/src/core/lib/transport/transport_op_string.cc
index 9f5dafa4af..8c7db642a5 100644
--- a/src/core/lib/transport/transport_op_string.cc
+++ b/src/core/lib/transport/transport_op_string.cc
@@ -48,12 +48,7 @@ static void put_metadata_list(gpr_strvec* b, grpc_metadata_batch md) {
   grpc_linked_mdelem* m;
   for (m = md.list.head; m != nullptr; m = m->next) {
     if (m != md.list.head) gpr_strvec_add(b, gpr_strdup(", "));
-    if (grpc_metadata_batch_is_valid_mdelem_index(m->md_index)) {
-      // TODO(hcaseyal): print out the mdelem index
-      gpr_strvec_add(b, gpr_strdup("indexed mdelem"));
-    } else {
-      put_metadata(b, m->md);
-    }
+    put_metadata(b, m->md);
   }
   if (md.deadline != GRPC_MILLIS_INF_FUTURE) {
     char* tmp;
diff --git a/test/core/transport/chttp2/hpack_encoder_test.cc b/test/core/transport/chttp2/hpack_encoder_test.cc
index ab59ee9c5b..2a57198ab6 100644
--- a/test/core/transport/chttp2/hpack_encoder_test.cc
+++ b/test/core/transport/chttp2/hpack_encoder_test.cc
@@ -59,7 +59,7 @@ static void verify(const verify_params params, const char* expected,
   size_t i;
   va_list l;
   grpc_linked_mdelem* e =
-      static_cast<grpc_linked_mdelem*>(gpr_zalloc(sizeof(*e) * nheaders));
+      static_cast<grpc_linked_mdelem*>(gpr_malloc(sizeof(*e) * nheaders));
   grpc_metadata_batch b;
 
   grpc_metadata_batch_init(&b);
@@ -205,7 +205,7 @@ static void verify_table_size_change_match_elem_size(const char* key,
   size_t elem_size = grpc_mdelem_get_size_in_hpack_table(elem, use_true_binary);
   size_t initial_table_size = g_compressor.table_size;
   grpc_linked_mdelem* e =
-      static_cast<grpc_linked_mdelem*>(gpr_zalloc(sizeof(*e)));
+      static_cast<grpc_linked_mdelem*>(gpr_malloc(sizeof(*e)));
   grpc_metadata_batch b;
   grpc_metadata_batch_init(&b);
   e[0].md = elem;
diff --git a/test/core/transport/metadata_test.cc b/test/core/transport/metadata_test.cc
index 4be34f72d9..7b064c4f2a 100644
--- a/test/core/transport/metadata_test.cc
+++ b/test/core/transport/metadata_test.cc
@@ -350,8 +350,9 @@ static void test_copied_static_metadata(bool dup_key, bool dup_value) {
   grpc_core::ExecCtx exec_ctx;
 
   for (size_t i = 0; i < GRPC_STATIC_MDELEM_COUNT; i++) {
-    grpc_mdelem p = GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[i],
-                                     GRPC_MDELEM_STORAGE_STATIC);
+    grpc_mdelem p =
+        GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[i],
+                         GRPC_MDELEM_STORAGE_STATIC, GRPC_MDINDEX_UNUSED);
     grpc_mdelem q =
         grpc_mdelem_from_slices(maybe_dup(GRPC_MDKEY(p), dup_key),
                                 maybe_dup(GRPC_MDVALUE(p), dup_value));
diff --git a/tools/codegen/core/gen_static_metadata.py b/tools/codegen/core/gen_static_metadata.py
index 621ee9991d..36c76fada9 100755
--- a/tools/codegen/core/gen_static_metadata.py
+++ b/tools/codegen/core/gen_static_metadata.py
@@ -452,7 +452,8 @@ print >> H, ('extern uintptr_t '
 for i, elem in enumerate(all_elems):
     print >> H, '/* "%s": "%s" Index="%d" */' % elem
     print >> H, ('#define %s (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[%d], '
-                 'GRPC_MDELEM_STORAGE_STATIC), %d)') % (mangle(elem).upper(), i, elem[2])
+                 'GRPC_MDELEM_STORAGE_STATIC, %d))') % (mangle(elem).upper(), i,
+                                                        elem[2])
 print >> H
 print >> C, ('uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT] '
              '= {')
@@ -584,7 +585,7 @@ print >> C, '0,%s' % ','.join('%d' % md_idx(elem) for elem in compression_elems)
 print >> C, '};'
 print >> C
 
-print >> H, '#define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs) (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[grpc_static_accept_encoding_metadata[(algs)]], GRPC_MDELEM_STORAGE_STATIC), 0)'
+print >> H, '#define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs) (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[grpc_static_accept_encoding_metadata[(algs)]], GRPC_MDELEM_STORAGE_STATIC, 0))'
 print >> H
 
 print >> H, 'extern const uint8_t grpc_static_accept_stream_encoding_metadata[%d];' % (
@@ -595,7 +596,7 @@ print >> C, '0,%s' % ','.join(
     '%d' % md_idx(elem) for elem in stream_compression_elems)
 print >> C, '};'
 
-print >> H, '#define GRPC_MDELEM_ACCEPT_STREAM_ENCODING_FOR_ALGORITHMS(algs) (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[grpc_static_accept_stream_encoding_metadata[(algs)]], GRPC_MDELEM_STORAGE_STATIC), 0)'
+print >> H, '#define GRPC_MDELEM_ACCEPT_STREAM_ENCODING_FOR_ALGORITHMS(algs) (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[grpc_static_accept_stream_encoding_metadata[(algs)]], GRPC_MDELEM_STORAGE_STATIC, 0))'
 
 print >> H, '#endif /* GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H */'