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

cc/layers/layer.cc

Index: cc/layers/layer.cc
diff --git a/cc/layers/layer.cc b/cc/layers/layer.cc
index 8a2b7e408d8d8ee1503bee58831ad6c92cd4899d..a9e59d35ed8007322e6961899eb8ad625c2e9b8a 100644
--- a/cc/layers/layer.cc
+++ b/cc/layers/layer.cc
@@ -422,14 +422,14 @@ SkColor Layer::SafeOpaqueBackgroundColor() const {
   return color;
 }
 
-void Layer::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) {
+void Layer::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) {
   DCHECK(layer_tree_host_);
 
   *contents_scale_x = 1;