Refactoring the way begin frame sources inside scheduler work.

cc/trees/single_thread_proxy.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_TREES_SINGLE_THREAD_PROXY_H_
 #define CC_TREES_SINGLE_THREAD_PROXY_H_
 
 #include <limits>
 
 #include "base/time/time.h"
@@ skipping 35 matching lines @@
   virtual void Start() OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual size_t MaxPartialTextureUpdates() const OVERRIDE;
   virtual void ForceSerializeOnSwapBuffers() OVERRIDE;
   virtual scoped_ptr<base::Value> AsValue() const OVERRIDE;
   virtual bool CommitPendingForTesting() OVERRIDE;
 
   // LayerTreeHostImplClient implementation
   virtual void UpdateRendererCapabilitiesOnImplThread() OVERRIDE;
   virtual void DidLoseOutputSurfaceOnImplThread() OVERRIDE;
-  virtual void CommitVSyncParameters(base::TimeTicks timebase,
-                                     base::TimeDelta interval) OVERRIDE {}
   virtual void SetEstimatedParentDrawTime(base::TimeDelta draw_time) OVERRIDE {}
   virtual void SetMaxSwapsPendingOnImplThread(int max) OVERRIDE {}
   virtual void DidSwapBuffersOnImplThread() OVERRIDE;
   virtual void DidSwapBuffersCompleteOnImplThread() OVERRIDE;
-  virtual void BeginFrame(const BeginFrameArgs& args) OVERRIDE {}
+  // TODO(mithro): Why is this an empty???
   virtual void OnCanDrawStateChanged(bool can_draw) OVERRIDE;
   virtual void NotifyReadyToActivate() OVERRIDE;
   virtual void SetNeedsRedrawOnImplThread() OVERRIDE;
   virtual void SetNeedsRedrawRectOnImplThread(
       const gfx::Rect& dirty_rect) OVERRIDE;
   virtual void SetNeedsAnimateOnImplThread() OVERRIDE;
   virtual void SetNeedsManageTilesOnImplThread() OVERRIDE;
   virtual void DidInitializeVisibleTileOnImplThread() OVERRIDE;
   virtual void SetNeedsCommitOnImplThread() OVERRIDE;
   virtual void PostAnimationEventsToMainThreadOnImplThread(
@@ skipping 21 matching lines @@
  private:
   SingleThreadProxy(LayerTreeHost* layer_tree_host,
                     LayerTreeHostSingleThreadClient* client);
 
   void DoCommit(scoped_ptr<ResourceUpdateQueue> queue);
   bool DoComposite(base::TimeTicks frame_begin_time,
                    LayerTreeHostImpl::FrameData* frame);
   void DidSwapFrame();
 
   bool ShouldComposite() const;
-  void UpdateBackgroundAnimateTicking();
 
   // Accessed on main thread only.
   LayerTreeHost* layer_tree_host_;
   LayerTreeHostSingleThreadClient* client_;
 
   // Used on the Thread, but checked on main thread during
   // initialization/shutdown.
   scoped_ptr<LayerTreeHostImpl> layer_tree_host_impl_;
   RendererCapabilities renderer_capabilities_for_main_thread_;
 
@@ skipping 61 matching lines @@
  private:
   DebugScopedSetImplThread impl_thread_;
   DebugScopedSetMainThreadBlocked main_thread_blocked_;
 
   DISALLOW_COPY_AND_ASSIGN(DebugScopedSetImplThreadAndMainThreadBlocked);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_SINGLE_THREAD_PROXY_H_