cc: Advance commit state with a CancelableClosure

cc/scheduler/scheduler.h

Index: cc/scheduler/scheduler.h
diff --git a/cc/scheduler/scheduler.h b/cc/scheduler/scheduler.h
index b69fba9ade61f028ae2a4181ecf3ce4a939e7dc0..b6814e9c2fb700a41b630c0434749b63b66f3a70 100644
--- a/cc/scheduler/scheduler.h
+++ b/cc/scheduler/scheduler.h
@@ -113,6 +113,7 @@ class CC_EXPORT Scheduler {
   void BeginImplFrame(const BeginFrameArgs& args);
   void OnBeginImplFrameDeadline();
   void PollForAnticipatedDrawTriggers();
+  void PollToAdvanceCommitState();
 
   scoped_ptr<base::Value> StateAsValue() const;
 
@@ -154,7 +155,7 @@ class CC_EXPORT Scheduler {
   BeginFrameArgs last_begin_impl_frame_args_;
   base::CancelableClosure begin_impl_frame_deadline_closure_;
   base::CancelableClosure poll_for_draw_triggers_closure_;
-  base::RepeatingTimer<Scheduler> advance_commit_state_timer_;
+  base::CancelableClosure advance_commit_state_closure_;
 
   SchedulerStateMachine state_machine_;
   bool inside_process_scheduled_actions_;