[tracing] Use trace event profiling for heap profiling

skia/ext/event_tracer_impl.cc

Index: skia/ext/event_tracer_impl.cc
diff --git a/skia/ext/event_tracer_impl.cc b/skia/ext/event_tracer_impl.cc
index be92583eb4e44530fd643c8df8f42f900218d260..ffb1d9927570db871e964e9b9d6b115f01f311d2 100644
--- a/skia/ext/event_tracer_impl.cc
+++ b/skia/ext/event_tracer_impl.cc
@@ -4,6 +4,7 @@
 
 #include <stdint.h>
 
+#include "base/trace_event/heap_profiler_allocation_context_tracker.h"
 #include "base/trace_event/trace_event.h"
 #include "skia/ext/event_tracer_impl.h"
 #include "third_party/skia/include/utils/SkEventTracer.h"
@@ -25,6 +26,8 @@ class SkChromiumEventTracer: public SkEventTracer {
   void updateTraceEventDuration(const uint8_t* categoryEnabledFlag,
                                 const char* name,
                                 SkEventTracer::Handle handle) override;
+  void pushPseudoStackFrame(const char* stack_frame) override;
+  void popPseudoStackFrame(const char* stack_frame) override;
 };
 
 const uint8_t*
@@ -32,6 +35,16 @@ const uint8_t*
     return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(name);
 }
 
+void SkChromiumEventTracer::pushPseudoStackFrame(const char* stack_frame) {
+  base::trace_event::AllocationContextTracker::GetInstanceForCurrentThread()
+      ->PushPseudoStackFrame(stack_frame);
+}
+
+void SkChromiumEventTracer::popPseudoStackFrame(const char* stack_frame) {
+  base::trace_event::AllocationContextTracker::GetInstanceForCurrentThread()
+      ->PopPseudoStackFrame(stack_frame);
+}
+
 const char* SkChromiumEventTracer::getCategoryGroupName(
       const uint8_t* categoryEnabledFlag) {
   return base::trace_event::TraceLog::GetCategoryGroupName(categoryEnabledFlag);