Histograms - Support histograms for Plugins, GPU

content/common/child_thread.cc

Index: content/common/child_thread.cc
===================================================================
--- content/common/child_thread.cc	(revision 140625)
+++ content/common/child_thread.cc	(working copy)
@@ -10,6 +10,7 @@
 #include "base/process.h"
 #include "base/string_util.h"
 #include "base/tracked_objects.h"
+#include "content/common/child_histogram_message_filter.h"
 #include "content/common/child_process.h"
 #include "content/common/child_process_messages.h"
 #include "content/common/child_trace_message_filter.h"
@@ -56,11 +57,13 @@
   socket_stream_dispatcher_.reset(new SocketStreamDispatcher());
   file_system_dispatcher_.reset(new FileSystemDispatcher());
   quota_dispatcher_.reset(new QuotaDispatcher());
+  histogram_message_filter_ = new ChildHistogramMessageFilter();
 
   sync_message_filter_ =
       new IPC::SyncMessageFilter(ChildProcess::current()->GetShutDownEvent());
   channel_->AddFilter(sync_message_filter_.get());
   channel_->AddFilter(new ChildTraceMessageFilter());
+  channel_->AddFilter(histogram_message_filter_);
 }
 
 ChildThread::~ChildThread() {