cc: Throttle swaps in Scheduler instead of OutputSurface

cc/scheduler/scheduler.h

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_SCHEDULER_SCHEDULER_H_
 #define CC_SCHEDULER_SCHEDULER_H_
 
 #include <deque>
 #include <string>
 
@@ skipping 60 matching lines @@
   // Like SetNeedsCommit(), but ensures a commit will definitely happen even if
   // we are not visible. Will eventually result in a forced draw internally.
   void SetNeedsForcedCommitForReadback();
 
   void SetNeedsRedraw();
 
   void SetNeedsManageTiles();
 
   void SetMainThreadNeedsLayerTextures();
 
+  void SetMaxSwapsPending(int max);
+  void DidSwapBuffers();
   void SetSwapUsedIncompleteTile(bool used_incomplete_tile);
+  void OnSwapBuffersComplete();
 
   void SetSmoothnessTakesPriority(bool smoothness_takes_priority);
 
   void NotifyReadyToCommit();
   void BeginMainFrameAborted(bool did_handle);
 
   void DidManageTiles();
   void DidLoseOutputSurface();
   void DidCreateAndInitializeOutputSurface();
   bool HasInitializedOutputSurface() const {
@@ skipping 85 matching lines @@
   SchedulerStateMachine::Action inside_action_;
 
   base::WeakPtrFactory<Scheduler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Scheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_SCHEDULER_SCHEDULER_H_