Record Chrome trace events in tcmalloc heap profiles

content/renderer/render_thread_impl.h

Index: content/renderer/render_thread_impl.h
diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index 6508fc9e610b8d3e79702ff8205d2841840e0fa8..8db3c17257447600d1d6e5477eeb83a33e42d150 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -46,6 +46,10 @@ namespace cc {
 class ContextProvider;
 }
 
+namespace debug {
+class TraceMemoryController;
+}

[jar (doing other things), 2013/07/12 01:24:26]

nit:  // namespace debug 

Same above and below.

[James Cook, 2013/07/12 17:40:27]

Done, but again, this seems inconsistent with the rest of the code base.

+
 namespace IPC {
 class ForwardingMessageFilter;
 }
@@ -467,6 +471,9 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
 
   HistogramCustomizer histogram_customizer_;
 
+  // Observes trace events being enabled for memory tracking.
+  scoped_ptr<base::debug::TraceMemoryController> trace_memory_controller_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };