cc: Move timing history to the Scheduler.

cc/trees/single_thread_proxy.cc

Index: cc/trees/single_thread_proxy.cc
diff --git a/cc/trees/single_thread_proxy.cc b/cc/trees/single_thread_proxy.cc
index 44ea7ca779261c813b134fe4eeb7fd55e053edba..ae2c568acd108f693108e5d2adb39d745daf0671 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -41,7 +41,6 @@ SingleThreadProxy::SingleThreadProxy(
     : Proxy(main_task_runner, NULL),
       layer_tree_host_(layer_tree_host),
       client_(client),
-      timing_history_(layer_tree_host->rendering_stats_instrumentation()),
       next_frame_is_newly_committed_frame_(false),
 #if DCHECK_IS_ON()
       inside_impl_frame_(false),
@@ -65,7 +64,8 @@ SingleThreadProxy::SingleThreadProxy(
     scheduler_settings.main_thread_should_always_be_low_latency = true;
     scheduler_on_impl_thread_ = Scheduler::Create(
         this, scheduler_settings, layer_tree_host_->id(),
-        MainThreadTaskRunner(), external_begin_frame_source.Pass());
+        MainThreadTaskRunner(), external_begin_frame_source.Pass(),
+        layer_tree_host->rendering_stats_instrumentation());
   }
 }
 
@@ -292,7 +292,6 @@ void SingleThreadProxy::CommitComplete() {
   commit_blocking_task_runner_.reset();
   layer_tree_host_->CommitComplete();
   layer_tree_host_->DidBeginMainFrame();
-  timing_history_.DidCommit();
 
   next_frame_is_newly_committed_frame_ = true;
 }
@@ -448,8 +447,6 @@ void SingleThreadProxy::DidActivateSyncTree() {
   // |commit_blocking_task_runner| would make sure all tasks posted during
   // commit/activation before CommitComplete.
   CommitComplete();
-
-  timing_history_.DidActivateSyncTree();
 }
 
 void SingleThreadProxy::DidPrepareTiles() {
@@ -639,8 +636,6 @@ DrawResult SingleThreadProxy::DoComposite(LayerTreeHostImpl::FrameData* frame) {
       return DRAW_ABORTED_CANT_DRAW;
     }
 
-    timing_history_.DidStartDrawing();
-
     // TODO(robliao): Remove ScopedTracker below once https://crbug.com/461509
     // is fixed.
     tracked_objects::ScopedTracker tracking_profile2(
@@ -676,7 +671,6 @@ DrawResult SingleThreadProxy::DoComposite(LayerTreeHostImpl::FrameData* frame) {
     tracked_objects::ScopedTracker tracking_profile7(
         FROM_HERE_WITH_EXPLICIT_FUNCTION(
             "461509 SingleThreadProxy::DoComposite7"));
-    timing_history_.DidFinishDrawing();
   }
 
   if (draw_frame) {
@@ -823,8 +817,6 @@ void SingleThreadProxy::DoBeginMainFrame(
 
   layer_tree_host_->UpdateLayers();
 
-  timing_history_.DidBeginMainFrame();
-
   // TODO(enne): SingleThreadProxy does not support cancelling commits yet,
   // search for CommitEarlyOutReason::FINISHED_NO_UPDATES inside
   // thread_proxy.cc
@@ -895,18 +887,6 @@ void SingleThreadProxy::ScheduledActionInvalidateOutputSurface() {
   NOTREACHED();
 }
 
-base::TimeDelta SingleThreadProxy::DrawDurationEstimate() {
-  return timing_history_.DrawDurationEstimate();
-}
-
-base::TimeDelta SingleThreadProxy::BeginMainFrameToCommitDurationEstimate() {
-  return timing_history_.BeginMainFrameToCommitDurationEstimate();
-}
-
-base::TimeDelta SingleThreadProxy::CommitToActivateDurationEstimate() {
-  return timing_history_.CommitToActivateDurationEstimate();
-}
-
 void SingleThreadProxy::DidFinishImplFrame() {
   layer_tree_host_impl_->DidFinishImplFrame();
 #if DCHECK_IS_ON()