Show gpu process stats in about:tcmalloc

chrome/browser/metrics/tracking_synchronizer.cc

Index: chrome/browser/metrics/tracking_synchronizer.cc
diff --git a/chrome/browser/metrics/tracking_synchronizer.cc b/chrome/browser/metrics/tracking_synchronizer.cc
index 635e0fde7e0e813fb9f03e2775cba3fe5e7702de..b955d4bf1c5f602eaf38c88d273666a4145fa97f 100644
--- a/chrome/browser/metrics/tracking_synchronizer.cc
+++ b/chrome/browser/metrics/tracking_synchronizer.cc
@@ -10,6 +10,7 @@
 #include "base/threading/thread.h"
 #include "base/tracked_objects.h"
 #include "chrome/browser/metrics/tracking_synchronizer_observer.h"
+#include "chrome/browser/browser_about_handler.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/profiler_controller.h"
 
@@ -239,6 +240,16 @@ void TrackingSynchronizer::OnProfilerDataCollected(
                                        process_type);
 }
 
+#if defined(USE_TCMALLOC)
+void TrackingSynchronizer::OnTcmallocStatsCollected(
+      base::ProcessId pid,
+      content::ProcessType process_type,
+      const std::string& output) {
+  AboutTcmallocOutputs::GetInstance()->OnStatsForChildProcess(
+      pid, process_type, output);
+}
+#endif
+
 int TrackingSynchronizer::RegisterAndNotifyAllProcesses(
     const base::WeakPtr<TrackingSynchronizerObserver>& callback_object) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));