cc:: Add RenderingStatsInstrumentation to manage collection of RenderingStats

cc/proxy.h

Index: cc/proxy.h
diff --git a/cc/proxy.h b/cc/proxy.h
index 09b657e0f17306e3703e2d8cfb6a898865a2a657..bbf82cf12bee5c5ec8faf3765be6d731ad64e774 100644
--- a/cc/proxy.h
+++ b/cc/proxy.h
@@ -22,7 +22,6 @@ class Vector2d;
 namespace cc {
 
 class Thread;
-struct RenderingStats;
 struct RendererCapabilities;
 
 // Abstract class responsible for proxying commands from the main-thread side of
@@ -78,8 +77,6 @@ class CC_EXPORT Proxy {
   // Returns false if the renderer couldn't be reinitialized.
   virtual bool RecreateOutputSurface() = 0;
 
-  virtual void CollectRenderingStats(RenderingStats* stats) = 0;
-
   virtual const RendererCapabilities& GetRendererCapabilities() const = 0;
 
   virtual void SetNeedsAnimate() = 0;