cc: Add main frame timing info to frame timing tracker.

cc/trees/thread_proxy.cc

Index: cc/trees/thread_proxy.cc
diff --git a/cc/trees/thread_proxy.cc b/cc/trees/thread_proxy.cc
index 74525200458415e93836061199d5e2221475ab4f..c51d19cda78f0f85916b304a996e05486c4afbe9 100644
--- a/cc/trees/thread_proxy.cc
+++ b/cc/trees/thread_proxy.cc
@@ -691,6 +691,8 @@ void ThreadProxy::ScheduledActionSendBeginMainFrame() {
       impl().layer_tree_host_impl->memory_allocation_priority_cutoff();
   begin_main_frame_state->evicted_ui_resources =
       impl().layer_tree_host_impl->EvictedUIResourcesExist();
+  impl().layer_tree_host_impl->SetCurrentRequestAnimationFrameTime(
+      begin_main_frame_state->begin_frame_args.frame_time);
   Proxy::MainThreadTaskRunner()->PostTask(
       FROM_HERE,
       base::Bind(&ThreadProxy::BeginMainFrame,
@@ -1369,4 +1371,9 @@ void ThreadProxy::DidCompletePageScaleAnimationOnImplThread() {
                             main_thread_weak_ptr_));
 }
 
+base::TimeTicks ThreadProxy::GetNextPredictedRequestAnimationFrameTime() const {
+  DCHECK(IsImplThread());
+  return impl().scheduler->NextPredictedRequestAnimationFrameTime();
+}
+
 }  // namespace cc