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

cc/trees/layer_tree_host_impl_unittest.cc

Index: cc/trees/layer_tree_host_impl_unittest.cc
diff --git a/cc/trees/layer_tree_host_impl_unittest.cc b/cc/trees/layer_tree_host_impl_unittest.cc
index 706efca0a7426884644b523715191d8e4cabe43b..b10d9a8fd6b4689c1ae6213c45041bea99154daa 100644
--- a/cc/trees/layer_tree_host_impl_unittest.cc
+++ b/cc/trees/layer_tree_host_impl_unittest.cc
@@ -168,6 +168,10 @@ class LayerTreeHostImplTest : public testing::Test,
     did_complete_page_scale_animation_ = true;
   }
   void OnDrawForOutputSurface() override {}
+  void PostFrameTimingEventsOnImplThread(
+      scoped_ptr<FrameTimingTracker::CompositeTimingSet> composite_events,
+      scoped_ptr<FrameTimingTracker::MainFrameTimingSet> main_frame_events)
+      override {}
 
   void set_reduce_memory_result(bool reduce_memory_result) {
     reduce_memory_result_ = reduce_memory_result;