Rasterize at maximum scale for scale animations on CPU-rasterized layers

cc/layers/contents_scaling_layer.h

Index: cc/layers/contents_scaling_layer.h
diff --git a/cc/layers/contents_scaling_layer.h b/cc/layers/contents_scaling_layer.h
index 52abc4bc99fdbd9744d8bd3b2eea268a217ea7dd..3e959622d753b8fadfb0435ccc4482cd5a12c528 100644
--- a/cc/layers/contents_scaling_layer.h
+++ b/cc/layers/contents_scaling_layer.h
@@ -14,14 +14,14 @@ namespace cc {
 // The content bounds are determined by bounds and scale of the contents.
 class CC_EXPORT ContentsScalingLayer : public Layer {
  public:
-  virtual void CalculateContentsScale(
-      float ideal_contents_scale,
-      float device_scale_factor,
-      float page_scale_factor,
-      bool animating_transform_to_screen,
-      float* contents_scale_x,
-      float* contents_scale_y,
-      gfx::Size* content_bounds) OVERRIDE;
+  virtual void CalculateContentsScale(float ideal_contents_scale,
+                                      float device_scale_factor,
+                                      float page_scale_factor,
+                                      float maximum_animation_contents_scale,
+                                      bool animating_transform_to_screen,
+                                      float* contents_scale_x,
+                                      float* contents_scale_y,
+                                      gfx::Size* content_bounds) OVERRIDE;
 
   virtual bool Update(ResourceUpdateQueue* queue,
                       const OcclusionTracker<Layer>* occlusion) OVERRIDE;