Refactoring the way begin frame sources inside scheduler work.

cc/trees/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_THREAD_PROXY_H_
 #define CC_TREES_THREAD_PROXY_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 163 matching lines @@
   virtual void SetDebugState(const LayerTreeDebugState& debug_state) OVERRIDE;
   virtual void AsValueInto(base::debug::TracedValue* value) const OVERRIDE;
   virtual bool MainFrameWillHappenForTesting() 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 BeginFrame(const BeginFrameArgs& args) OVERRIDE;
   virtual void SetMaxSwapsPendingOnImplThread(int max) OVERRIDE;
   virtual void DidSwapBuffersOnImplThread() OVERRIDE;
   virtual void DidSwapBuffersCompleteOnImplThread() OVERRIDE;
   virtual void OnCanDrawStateChanged(bool can_draw) OVERRIDE;
   virtual void NotifyReadyToActivate() OVERRIDE;
   // Please call these 3 functions through
   // LayerTreeHostImpl's SetNeedsRedraw(), SetNeedsRedrawRect() and
   // SetNeedsAnimate().
   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(
       scoped_ptr<AnimationEventsVector> queue) OVERRIDE;
   virtual bool ReduceContentsTextureMemoryOnImplThread(size_t limit_bytes,
                                                        int priority_cutoff)
       OVERRIDE;
   virtual bool IsInsideDraw() OVERRIDE;
   virtual void RenewTreePriority() OVERRIDE;
   virtual void PostDelayedScrollbarFadeOnImplThread(
       const base::Closure& start_fade,
       base::TimeDelta delay) OVERRIDE;
   virtual void DidActivateSyncTree() OVERRIDE;
   virtual void DidManageTiles() OVERRIDE;
 
   // SchedulerClient implementation
-  virtual void SetNeedsBeginFrame(bool enable) OVERRIDE;
+  virtual BeginFrameSource* ExternalBeginFrameSource() OVERRIDE;
   virtual void WillBeginImplFrame(const BeginFrameArgs& args) OVERRIDE;
   virtual void ScheduledActionSendBeginMainFrame() OVERRIDE;
   virtual DrawResult ScheduledActionDrawAndSwapIfPossible() OVERRIDE;
   virtual DrawResult ScheduledActionDrawAndSwapForced() OVERRIDE;
   virtual void ScheduledActionAnimate() OVERRIDE;
   virtual void ScheduledActionCommit() OVERRIDE;
   virtual void ScheduledActionUpdateVisibleTiles() OVERRIDE;
   virtual void ScheduledActionActivateSyncTree() OVERRIDE;
   virtual void ScheduledActionBeginOutputSurfaceCreation() OVERRIDE;
   virtual void ScheduledActionManageTiles() OVERRIDE;
@@ skipping 73 matching lines @@
 
   base::WeakPtr<ThreadProxy> main_thread_weak_ptr_;
   base::WeakPtr<ThreadProxy> impl_thread_weak_ptr_;
 
   DISALLOW_COPY_AND_ASSIGN(ThreadProxy);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_THREAD_PROXY_H_