1 files changed, 3 insertions, 2 deletions
diff --git a/src/core/lib/channel/channel_stack.h b/src/core/lib/channel/channel_stack.h
index 4496b864dc..63382c05b2 100644
--- a/src/core/lib/channel/channel_stack.h
+++ b/src/core/lib/channel/channel_stack.h
@@ -84,6 +84,7 @@ typedef struct {
 typedef struct {
   grpc_call_stats stats;
   grpc_status_code final_status;
+  const char** error_string;
 } grpc_call_final_info;
 
 /* Channel filters specify:
@@ -273,10 +274,10 @@ void grpc_call_log_op(const char* file, int line, gpr_log_severity severity,
                       grpc_call_element* elem,
                       grpc_transport_stream_op_batch* op);
 
-extern grpc_tracer_flag grpc_trace_channel;
+extern grpc_core::TraceFlag grpc_trace_channel;
 
 #define GRPC_CALL_LOG_OP(sev, elem, op) \
-  if (GRPC_TRACER_ON(grpc_trace_channel)) grpc_call_log_op(sev, elem, op)
+  if (grpc_trace_channel.enabled()) grpc_call_log_op(sev, elem, op)
 
 #ifdef __cplusplus
 }