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

cc/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 CCSingleThreadProxy_h
 #define CCSingleThreadProxy_h
 
 #include <limits>
 
 #include "base/time.h"
 #include "cc/animation_events.h"
 #include "cc/layer_tree_host_impl.h"
 #include "cc/proxy.h"
 
 namespace cc {
 
 class LayerTreeHost;
+class RenderingStatsSubscriber;
 
 class SingleThreadProxy : public Proxy, LayerTreeHostImplClient {
 public:
     static scoped_ptr<Proxy> create(LayerTreeHost*);
     virtual ~SingleThreadProxy();
 
     // 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 33 matching lines @@
 
     // Used on the Thread, but checked on main thread during initialization/shutdown.
     scoped_ptr<LayerTreeHostImpl> m_layerTreeHostImpl;
     bool m_rendererInitialized;
     RendererCapabilities m_RendererCapabilitiesForMainThread;
 
     bool m_nextFrameIsNewlyCommittedFrame;
 
     base::TimeDelta m_totalCommitTime;
     size_t m_totalCommitCount;
+    scoped_ptr<RenderingStatsSubscriber> m_renderingStatsSubscriber;
 };
 
 // For use in the single-threaded case. In debug builds, it pretends that the
 // code is running on the impl thread to satisfy assertion checks.
 class DebugScopedSetImplThread {
 public:
     DebugScopedSetImplThread()
     {
 #ifndef NDEBUG
         Proxy::setCurrentThreadIsImplThread(true);
@@ skipping 30 matching lines @@
 // satisfy assertion checks
 class DebugScopedSetImplThreadAndMainThreadBlocked {
 private:
     DebugScopedSetImplThread m_implThread;
     DebugScopedSetMainThreadBlocked m_mainThreadBlocked;
 };
 
 } // namespace cc
 
 #endif