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

cc/resources/content_layer_updater.h

Index: cc/resources/content_layer_updater.h
diff --git a/cc/resources/content_layer_updater.h b/cc/resources/content_layer_updater.h
index 80b8a48b1846c4351e9cda88fce1359edf72aec8..ca1f6e422fb6dbe6b6717ada9d0cb5aa7b51eba9 100644
--- a/cc/resources/content_layer_updater.h
+++ b/cc/resources/content_layer_updater.h
@@ -14,23 +14,26 @@ class SkCanvas;
 namespace cc {
 
 class LayerPainter;
+class RenderingStatsInstrumentation;
 
 // Base class for BitmapContentLayerUpdater and
 // SkPictureContentLayerUpdater that reduces code duplication between
 // their respective PaintContents implementations.
 class CC_EXPORT ContentLayerUpdater : public LayerUpdater {
  protected:
-  explicit ContentLayerUpdater(scoped_ptr<LayerPainter> painter);
+  ContentLayerUpdater(scoped_ptr<LayerPainter> painter,
+                      RenderingStatsInstrumentation* stats_instrumentation);
   virtual ~ContentLayerUpdater();
 
   void PaintContents(SkCanvas* canvas,
                      gfx::Rect content_rect,
                      float contents_width_scale,
                      float contents_height_scale,
-                     gfx::Rect* resulting_opaque_rect,
-                     RenderingStats* stats);
+                     gfx::Rect* resulting_opaque_rect);
   gfx::Rect content_rect() const { return content_rect_; }
 
+  RenderingStatsInstrumentation* rendering_stats_instrumentation_;
+
  private:
   gfx::Rect content_rect_;
   scoped_ptr<LayerPainter> painter_;