cc: Remove unused arguments from CalculateContentsScale

cc/layers/image_layer.h

Index: cc/layers/image_layer.h
diff --git a/cc/layers/image_layer.h b/cc/layers/image_layer.h
index 2f3255f092af7f3cd55556b82214f2a359b30bae..a3cee58e9d1c8118657e5ce050270d4de8487e22 100644
--- a/cc/layers/image_layer.h
+++ b/cc/layers/image_layer.h
@@ -25,10 +25,6 @@ class CC_EXPORT ImageLayer : public TiledLayer {
   virtual bool Update(ResourceUpdateQueue* queue,
                       const OcclusionTracker<Layer>* occlusion) 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;