cc: Switch RenderingStats collection in Layer::Update() to RenderingStatsInstrumentation

cc/layers/tiled_layer.h

Index: cc/layers/tiled_layer.h
diff --git a/cc/layers/tiled_layer.h b/cc/layers/tiled_layer.h
index 94ebadaf982e660b2fd4175708aaa01802185222..878d426b3298ba8d20ad670e43692f8a08c9be8f 100644
--- a/cc/layers/tiled_layer.h
+++ b/cc/layers/tiled_layer.h
@@ -34,8 +34,7 @@ class CC_EXPORT TiledLayer : public ContentsScalingLayer {
       OVERRIDE;
   virtual Region VisibleContentOpaqueRegion() const OVERRIDE;
   virtual void Update(ResourceUpdateQueue* queue,
-                      const OcclusionTracker* occlusion,
-                      RenderingStats* stats) OVERRIDE;
+                      const OcclusionTracker* occlusion) OVERRIDE;
 
  protected:
   TiledLayer();
@@ -96,7 +95,6 @@ class CC_EXPORT TiledLayer : public ContentsScalingLayer {
                    int bottom,
                    ResourceUpdateQueue* queue,
                    const OcclusionTracker* occlusion,
-                   RenderingStats* stats,
                    bool* did_paint);
   bool HaveTexturesForTiles(int left,
                             int top,
@@ -114,8 +112,7 @@ class CC_EXPORT TiledLayer : public ContentsScalingLayer {
                           int right,
                           int bottom,
                           ResourceUpdateQueue* queue,
-                          const OcclusionTracker* occlusion,
-                          RenderingStats* stats);
+                          const OcclusionTracker* occlusion);
   void UpdateScrollPrediction();
 
   UpdatableTile* TileAt(int i, int j) const;