[tracing] Use trace event profiling for heap profiling

third_party/WebKit/Source/platform/EventTracer.cpp

Index: third_party/WebKit/Source/platform/EventTracer.cpp
diff --git a/third_party/WebKit/Source/platform/EventTracer.cpp b/third_party/WebKit/Source/platform/EventTracer.cpp
index 94015e145f7e75376ea0a55f43d75c8b2c0e9736..e3b93af2a440b89aba30b8448927f431fdf5e6c3 100644
--- a/third_party/WebKit/Source/platform/EventTracer.cpp
+++ b/third_party/WebKit/Source/platform/EventTracer.cpp
@@ -31,6 +31,7 @@
 #include "platform/EventTracer.h"
 
 #include "base/time/time.h"
+#include "base/trace_event/heap_profiler_allocation_context_tracker.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "platform/TracedValue.h"
@@ -119,4 +120,16 @@ double EventTracer::systemTraceTime()
     return (base::TimeTicks::Now() - base::TimeTicks()).InSecondsF();
 }
 
+void EventTracer::pushPseudoStackFrame(const char* stackFrame)
+{
+    base::trace_event::AllocationContextTracker::GetInstanceForCurrentThread()
+        ->PushPseudoStackFrame(stackFrame);
+}
+
+void EventTracer::popPseudoStackFrame(const char* stackFrame)
+{
+    base::trace_event::AllocationContextTracker::GetInstanceForCurrentThread()
+        ->PopPseudoStackFrame(stackFrame);
+}
+
 } // namespace blink