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

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index 10a9f74f2d69d20db08058448f134bff494367f0..6942fb9f1ad3d65878dc80ebaa1ccfa82bea07e8 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -232,7 +232,7 @@ LayerTreeHostImpl::LayerTreeHostImpl(
       id_(id),
       requires_high_res_to_draw_(false),
       is_likely_to_require_a_draw_(false),
-      frame_timing_tracker_(FrameTimingTracker::Create()) {
+      frame_timing_tracker_(FrameTimingTracker::Create(this)) {
   DCHECK(proxy_->IsImplThread());
   DidVisibilityChange(this, visible_);
   animation_registrar_->set_supports_scroll_animations(
@@ -2173,6 +2173,13 @@ void LayerTreeHostImpl::RecordMainFrameTiming(
       request_ids, start_time, end_time, active_tree_->source_frame_number());
 }
 
+void LayerTreeHostImpl::PostFrameTimingEvents(
+    scoped_ptr<FrameTimingTracker::CompositeTimingSet> composite_events,
+    scoped_ptr<FrameTimingTracker::MainFrameTimingSet> main_frame_events) {
+  client_->PostFrameTimingEventsOnImplThread(composite_events.Pass(),
+                                             main_frame_events.Pass());
+}
+
 void LayerTreeHostImpl::DestroyTileManager() {
   tile_manager_ = nullptr;
   resource_pool_ = nullptr;