Show gpu process stats in about:tcmalloc

content/browser/profiler_controller_impl.h

Index: content/browser/profiler_controller_impl.h
diff --git a/content/browser/profiler_controller_impl.h b/content/browser/profiler_controller_impl.h
index 13f9c331ba2c17d6019271f70d6a4b5692e519d2..bc930f68476abe77a052d8b0886344279d1de7f0 100644
--- a/content/browser/profiler_controller_impl.h
+++ b/content/browser/profiler_controller_impl.h
@@ -6,6 +6,7 @@
 #define CONTENT_BROWSER_PROFILER_CONTROLLER_IMPL_H_
 
 #include "base/memory/singleton.h"
+#include "base/process.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/profiler_controller.h"
 #include "content/public/common/process_type.h"
@@ -34,12 +35,20 @@ class ProfilerControllerImpl : public ProfilerController {
   void OnPendingProcesses(int sequence_number, int pending_processes, bool end);
 
   // Send the |profiler_data| back to the |subscriber_|.
-  // This is called on the UI thread.
+  // This can be called from any thread.
   void OnProfilerDataCollected(
       int sequence_number,
       const tracked_objects::ProcessDataSnapshot& profiler_data,
       content::ProcessType process_type);
 
+#if defined(USE_TCMALLOC)
+  // Send the tcmalloc stats |output| back to |subscriber_|
+  // This can be called from any thread.
+  void OnTcmallocStatsCollected(base::ProcessId pid,
+                                ProcessType process_type,
+                                const std::string& output);
+#endif
+
   // ProfilerController implementation:
   virtual void Register(ProfilerSubscriber* subscriber) OVERRIDE;
   virtual void Unregister(const ProfilerSubscriber* subscriber) OVERRIDE;