Pass collected frame timing events to Blink

cc/trees/layer_tree_host_impl.h

Index: cc/trees/layer_tree_host_impl.h
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index 8cb7c5764fe57bd413996fd4976b969097577219..008257dac14b8682ecd8d7dc99e90bc25b47233a 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -127,6 +127,10 @@ class LayerTreeHostImplClient {
   // Called when output surface asks for a draw.
   virtual void OnDrawForOutputSurface() = 0;
 
+  virtual void PostFrameTimingEventsOnImplThread(
+      scoped_ptr<FrameTimingTracker::CompositeTimingSet> composite_events,
+      scoped_ptr<FrameTimingTracker::MainFrameTimingSet> main_frame_events) = 0;
+
  protected:
   virtual ~LayerTreeHostImplClient() {}
 };
@@ -538,6 +542,11 @@ class CC_EXPORT LayerTreeHostImpl
       const BeginFrameArgs& start_of_main_frame_args,
       const BeginFrameArgs& expected_next_main_frame_args);
 
+  // Post the given frame timing events to the requester.
+  void PostFrameTimingEvents(
+      scoped_ptr<FrameTimingTracker::CompositeTimingSet> composite_events,
+      scoped_ptr<FrameTimingTracker::MainFrameTimingSet> main_frame_events);
+
  protected:
   LayerTreeHostImpl(
       const LayerTreeSettings& settings,