1 files changed, 13 insertions, 9 deletions
diff --git a/src/core/lib/security/credentials/iam/iam_credentials.cc b/src/core/lib/security/credentials/iam/iam_credentials.cc
index 75acb2a58e..1741bf3068 100644
--- a/src/core/lib/security/credentials/iam/iam_credentials.cc
+++ b/src/core/lib/security/credentials/iam/iam_credentials.cc
@@ -27,12 +27,14 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
 
-static void iam_destruct(grpc_call_credentials* creds) {
+static void iam_destruct(grpc_exec_ctx* exec_ctx,
+                         grpc_call_credentials* creds) {
   grpc_google_iam_credentials* c = (grpc_google_iam_credentials*)creds;
-  grpc_credentials_mdelem_array_destroy(&c->md_array);
+  grpc_credentials_mdelem_array_destroy(exec_ctx, &c->md_array);
 }
 
-static bool iam_get_request_metadata(grpc_call_credentials* creds,
+static bool iam_get_request_metadata(grpc_exec_ctx* exec_ctx,
+                                     grpc_call_credentials* creds,
                                      grpc_polling_entity* pollent,
                                      grpc_auth_metadata_context context,
                                      grpc_credentials_mdelem_array* md_array,
@@ -44,8 +46,8 @@ static bool iam_get_request_metadata(grpc_call_credentials* creds,
 }
 
 static void iam_cancel_get_request_metadata(
-    grpc_call_credentials* c, grpc_credentials_mdelem_array* md_array,
-    grpc_error* error) {
+    grpc_exec_ctx* exec_ctx, grpc_call_credentials* c,
+    grpc_credentials_mdelem_array* md_array, grpc_error* error) {
   GRPC_ERROR_UNREF(error);
 }
 
@@ -54,7 +56,7 @@ static grpc_call_credentials_vtable iam_vtable = {
 
 grpc_call_credentials* grpc_google_iam_credentials_create(
     const char* token, const char* authority_selector, void* reserved) {
-  grpc_core::ExecCtx exec_ctx;
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   GRPC_API_TRACE(
       "grpc_iam_credentials_create(token=%s, authority_selector=%s, "
       "reserved=%p)",
@@ -68,15 +70,17 @@ grpc_call_credentials* grpc_google_iam_credentials_create(
   c->base.vtable = &iam_vtable;
   gpr_ref_init(&c->base.refcount, 1);
   grpc_mdelem md = grpc_mdelem_from_slices(
+      &exec_ctx,
       grpc_slice_from_static_string(GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY),
       grpc_slice_from_copied_string(token));
   grpc_credentials_mdelem_array_add(&c->md_array, md);
-  GRPC_MDELEM_UNREF(md);
+  GRPC_MDELEM_UNREF(&exec_ctx, md);
   md = grpc_mdelem_from_slices(
+      &exec_ctx,
       grpc_slice_from_static_string(GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY),
       grpc_slice_from_copied_string(authority_selector));
   grpc_credentials_mdelem_array_add(&c->md_array, md);
-  GRPC_MDELEM_UNREF(md);
-
+  GRPC_MDELEM_UNREF(&exec_ctx, md);
+  grpc_exec_ctx_finish(&exec_ctx);
   return &c->base;
 }