Histograms - Support histograms for Plugins, GPU

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
===================================================================
--- content/renderer/render_thread_impl.cc	(revision 139790)
+++ content/renderer/render_thread_impl.cc	(working copy)
@@ -16,6 +16,7 @@
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
+#include "base/metrics/histogram_sender.h"
 #include "base/metrics/stats_table.h"
 #include "base/path_service.h"
 #include "base/shared_memory.h"
@@ -392,6 +393,11 @@
   return sync_message_filter();
 }
 
+base::HistogramSender* RenderThreadImpl::GetHistogramSender() {
+  return reinterpret_cast<base::HistogramSender*>(
+      child_histogram_message_filter());
+}
+
 scoped_refptr<base::MessageLoopProxy>
     RenderThreadImpl::GetIOMessageLoopProxy() {
   return ChildProcess::current()->io_message_loop_proxy();