[tracing] Use trace event profiling for heap profiling

gin/v8_platform.cc

Index: gin/v8_platform.cc
diff --git a/gin/v8_platform.cc b/gin/v8_platform.cc
index 556f7fc5f24f0b1c924138a6b77709e7aea5bc5d..f7e21cf217f45506d456daa199ec9f85530333a3 100644
--- a/gin/v8_platform.cc
+++ b/gin/v8_platform.cc
@@ -8,6 +8,7 @@
 #include "base/location.h"
 #include "base/sys_info.h"
 #include "base/threading/worker_pool.h"
+#include "base/trace_event/heap_profiler_allocation_context_tracker.h"
 #include "base/trace_event/trace_event.h"
 #include "gin/per_isolate_data.h"
 
@@ -116,4 +117,14 @@ void V8Platform::UpdateTraceEventDuration(const uint8_t* category_enabled_flag,
                                               traceEventHandle);
 }
 
+void V8Platform::PushTracingPseudoStackFrame(const char* stack_frame) {
+  base::trace_event::AllocationContextTracker::GetInstanceForCurrentThread()
+      ->PushPseudoStackFrame(stack_frame);
+}
+
+void V8Platform::PopTracingPseudoStackFrame(const char* stack_frame) {
+  base::trace_event::AllocationContextTracker::GetInstanceForCurrentThread()
+      ->PopPseudoStackFrame(stack_frame);
+}
+
 }  // namespace gin