NOT READY FOR REVIEW - switch to a subscriber model for rendering stats

cc/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 CCThreadProxy_h
 #define CCThreadProxy_h
 
 #include "base/time.h"
 #include "cc/animation_events.h"
 #include "cc/completion_event.h"
 #include "cc/layer_tree_host_impl.h"
 #include "cc/proxy.h"
 #include "cc/resource_update_controller.h"
 #include "cc/scheduler.h"
 
 namespace cc {
 
 class InputHandler;
 class LayerTreeHost;
+class RenderingStatsSubscriber;
 class ResourceUpdateQueue;
 class Scheduler;
 class ScopedThreadProxy;
 class Thread;
 
 class ThreadProxy : public Proxy, LayerTreeHostImplClient, SchedulerClient, ResourceUpdateControllerClient {
 public:
     static scoped_ptr<Proxy> create(LayerTreeHost*);
 
     virtual ~ThreadProxy();
 
     // Proxy implementation
     virtual bool compositeAndReadback(void *pixels, const IntRect&) OVERRIDE;
     virtual void startPageScaleAnimation(const IntSize& targetPosition, bool useAnchor, float scale, base::TimeDelta duration) OVERRIDE;
     virtual void finishAllRendering() OVERRIDE;
     virtual bool isStarted() const OVERRIDE;
     virtual bool initializeContext() OVERRIDE;
     virtual void setSurfaceReady() OVERRIDE;
     virtual void setVisible(bool) OVERRIDE;
     virtual bool initializeRenderer() OVERRIDE;
     virtual bool recreateContext() OVERRIDE;
     virtual void renderingStats(RenderingStats*) OVERRIDE;
+    virtual void startRecordingRenderingStats() OVERRIDE;
+    virtual void stopRecordingRenderingStats(RenderingStats*) OVERRIDE;
     virtual const RendererCapabilities& rendererCapabilities() const OVERRIDE;
     virtual void loseContext() OVERRIDE;
     virtual void setNeedsAnimate() OVERRIDE;
     virtual void setNeedsCommit() OVERRIDE;
     virtual void setNeedsRedraw() OVERRIDE;
     virtual void setDeferCommits(bool) OVERRIDE;
     virtual bool commitRequested() const OVERRIDE;
     virtual void didAddAnimation() OVERRIDE { }
     virtual void start() OVERRIDE;
     virtual void stop() OVERRIDE;
@@ skipping 61 matching lines @@
     void requestReadbackOnImplThread(ReadbackRequest*);
     void requestStartPageScaleAnimationOnImplThread(IntSize targetPosition, bool useAnchor, float scale, base::TimeDelta duration);
     void finishAllRenderingOnImplThread(CompletionEvent*);
     void initializeImplOnImplThread(CompletionEvent*, InputHandler*);
     void setSurfaceReadyOnImplThread();
     void setVisibleOnImplThread(CompletionEvent*, bool);
     void initializeContextOnImplThread(GraphicsContext*);
     void initializeRendererOnImplThread(CompletionEvent*, bool* initializeSucceeded, RendererCapabilities*);
     void layerTreeHostClosedOnImplThread(CompletionEvent*);
     void setFullRootLayerDamageOnImplThread();
+    void startRecordingRenderingStatsOnImplThread(CompletionEvent*);
+    void stopRecordingRenderingStatsOnImplThread(CompletionEvent*, RenderingStats*);
     void acquireLayerTexturesForMainThreadOnImplThread(CompletionEvent*);
     void recreateContextOnImplThread(CompletionEvent*, GraphicsContext*, bool* recreateSucceeded, RendererCapabilities*);
     void renderingStatsOnImplThread(CompletionEvent*, RenderingStats*);
     ScheduledActionDrawAndSwapResult scheduledActionDrawAndSwapInternal(bool forcedDraw);
     void forceSerializeOnSwapBuffersOnImplThread(CompletionEvent*);
     void setNeedsForcedCommitOnImplThread();
 
     // Accessed on main thread only.
     bool m_animateRequested; // Set only when setNeedsAnimate is called.
     bool m_commitRequested; // Set only when setNeedsCommit is called.
@@ skipping 31 matching lines @@
     // Set when the main thread is waiting on layers to be drawn.
     CompletionEvent* m_textureAcquisitionCompletionEventOnImplThread;
 
     scoped_ptr<ResourceUpdateController> m_currentResourceUpdateControllerOnImplThread;
 
     // Set when the next draw should post didCommitAndDrawFrame to the main thread.
     bool m_nextFrameIsNewlyCommittedFrameOnImplThread;
 
     bool m_renderVSyncEnabled;
 
+    // TODO(vollick): These should go away once we switch to the subscriber model.
     base::TimeDelta m_totalCommitTime;
     size_t m_totalCommitCount;
+    scoped_ptr<RenderingStatsSubscriber> m_renderingStatsSubscriber;
 
     bool m_deferCommits;
     bool m_deferredCommitPending;
 };
 
 }  // namespace cc
 
 #endif