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

cc/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 CCProxy_h
 #define CCProxy_h
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/time.h"
@@ skipping 41 matching lines @@
     virtual void setVisible(bool) = 0;
 
     // Attempts to initialize the layer renderer. Returns false if the context isn't usable for compositing.
     virtual bool initializeRenderer() = 0;
 
     // Attempts to recreate the context and layer renderer after a context lost. Returns false if the renderer couldn't be
     // reinitialized.
     virtual bool recreateContext() = 0;
 
     virtual void renderingStats(RenderingStats*) = 0;
+    virtual void startRecordingRenderingStats() = 0;
+    virtual void stopRecordingRenderingStats(RenderingStats*) = 0;
 
     virtual const RendererCapabilities& rendererCapabilities() const = 0;
 
     virtual void setNeedsAnimate() = 0;
     virtual void setNeedsCommit() = 0;
     virtual void setNeedsRedraw() = 0;
 
     // Defers commits until it is reset. It is only supported when in threaded mode. It's an error to make a sync call
     // like compositeAndReadback while commits are deferred.
     virtual void setDeferCommits(bool) = 0;
@@ skipping 52 matching lines @@
 #ifndef NDEBUG
         DCHECK(Proxy::isMainThreadBlocked());
         Proxy::setMainThreadBlocked(false);
 #endif
     }
 };
 
 }
 
 #endif