cc: Scheduler will never process a commit until it receives a vsync tick.

cc/CCThreadProxy.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 CCThreadProxy_h
 #define CCThreadProxy_h
 
 #include "CCAnimationEvents.h"
 #include "CCCompletionEvent.h"
 #include "CCLayerTreeHostImpl.h"
 #include "CCProxy.h"
 #include "CCScheduler.h"
+#include "CCTextureUpdateController.h"
 #include <wtf/OwnPtr.h>
 
 namespace WebCore {
 
 class CCInputHandler;
 class CCLayerTreeHost;
 class CCScheduler;
 class CCScopedThreadProxy;
 class CCTextureUpdateQueue;
-class CCTextureUpdateController;
 class CCThread;
 class CCThreadProxyContextRecreationTimer;
 
-class CCThreadProxy : public CCProxy, CCLayerTreeHostImplClient, CCSchedulerClient {
+class CCThreadProxy : public CCProxy, CCLayerTreeHostImplClient, CCSchedulerClient, CCTextureUpdateControllerClient {
 public:
     static PassOwnPtr<CCProxy> create(CCLayerTreeHost*);
 
     virtual ~CCThreadProxy();
 
     // CCProxy implementation
     virtual bool compositeAndReadback(void *pixels, const IntRect&) OVERRIDE;
     virtual void startPageScaleAnimation(const IntSize& targetPosition, bool useAnchor, float scale, double duration) OVERRIDE;
     virtual void finishAllRendering() OVERRIDE;
     virtual bool isStarted() const OVERRIDE;
@@ skipping 19 matching lines @@
     // CCLayerTreeHostImplClient implementation
     virtual void didLoseContextOnImplThread() OVERRIDE;
     virtual void onSwapBuffersCompleteOnImplThread() OVERRIDE;
     virtual void onVSyncParametersChanged(double monotonicTimebase, double intervalInSeconds) OVERRIDE;
     virtual void onCanDrawStateChanged(bool canDraw) OVERRIDE;
     virtual void setNeedsRedrawOnImplThread() OVERRIDE;
     virtual void setNeedsCommitOnImplThread() OVERRIDE;
     virtual void postAnimationEventsToMainThreadOnImplThread(PassOwnPtr<CCAnimationEventsVector>, double wallClockTime) OVERRIDE;
 
     // CCSchedulerClient implementation
-    virtual bool hasMoreResourceUpdates() const OVERRIDE;
-
     virtual void scheduledActionBeginFrame() OVERRIDE;
     virtual CCScheduledActionDrawAndSwapResult scheduledActionDrawAndSwapIfPossible() OVERRIDE;
     virtual CCScheduledActionDrawAndSwapResult scheduledActionDrawAndSwapForced() OVERRIDE;
     virtual void scheduledActionUpdateMoreResources(double monotonicTimeLimit) OVERRIDE;
     virtual void scheduledActionCommit() OVERRIDE;
     virtual void scheduledActionBeginContextRecreation() OVERRIDE;
     virtual void scheduledActionAcquireLayerTexturesForMainThread() OVERRIDE;
 
+    // CCTextureUpdateControllerClient implementation
+    virtual void updateTexturesCompleted() OVERRIDE;
+
 private:
     explicit CCThreadProxy(CCLayerTreeHost*);
     friend class CCThreadProxyContextRecreationTimer;
 
     // Set on impl thread, read on main thread.
     struct BeginFrameAndCommitState {
         BeginFrameAndCommitState()
             : monotonicFrameBeginTime(0)
         {
         }
@@ skipping 85 matching lines @@
 
     // Set when the next draw should post didCommitAndDrawFrame to the main thread.
     bool m_nextFrameIsNewlyCommittedFrameOnImplThread;
 
     bool m_renderVSyncEnabled;
 };
 
 }
 
 #endif