[WIP] cc: Plumb frame timing info without using a commit.

cc/trees/layer_tree_host_client.h

Index: cc/trees/layer_tree_host_client.h
diff --git a/cc/trees/layer_tree_host_client.h b/cc/trees/layer_tree_host_client.h
index 6b305326ff956827753aa6a2c8415b3e51251afa..2914ef80febffd4fba52d41ca2edf193c9dfaa56 100644
--- a/cc/trees/layer_tree_host_client.h
+++ b/cc/trees/layer_tree_host_client.h
@@ -8,6 +8,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
+#include "cc/debug/frame_timing_tracker.h"
 
 namespace gfx {
 class Vector2d;
@@ -49,6 +50,9 @@ class LayerTreeHostClient {
   virtual void DidCommit() = 0;
   virtual void DidCommitAndDrawFrame() = 0;
   virtual void DidCompleteSwapBuffers() = 0;
+  virtual void RecordFrameTimingEvents(
+      scoped_ptr<FrameTimingTracker::CompositeTimingSet> composite_events,
+      scoped_ptr<FrameTimingTracker::MainFrameTimingSet> main_frame_events) = 0;
 
   // Called when page scale animation has completed.
   virtual void DidCompletePageScaleAnimation() = 0;