Record Chrome trace events in tcmalloc heap profiles

content/gpu/gpu_main.cc

Index: content/gpu/gpu_main.cc
diff --git a/content/gpu/gpu_main.cc b/content/gpu/gpu_main.cc
index 221361feae2df5fe75e05fa3fe72fc60ca889f83..80084906e4285a92c0a50c2d1630c411971824a0 100644
--- a/content/gpu/gpu_main.cc
+++ b/content/gpu/gpu_main.cc
@@ -9,6 +9,7 @@
 #endif
 
 #include "base/debug/trace_event.h"
+#include "base/debug/trace_event_memory.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop.h"
 #include "base/rand_util.h"
@@ -291,6 +292,8 @@ int GpuMain(const MainFunctionParams& parameters) {
   gpu_process.set_main_thread(child_thread);
 
   {
+    base::debug::TraceMemoryController trace_memory_controller(
+        main_message_loop.message_loop_proxy());
     TRACE_EVENT0("gpu", "Run Message Loop");
     main_message_loop.Run();
   }