Getting rid of frame_size_in_dip in Layer::SetShowSurface

ui/compositor/layer.h

Index: ui/compositor/layer.h
diff --git a/ui/compositor/layer.h b/ui/compositor/layer.h
index 4bb77d315bdc7e96014a88a6b7a7e7e874c27ae5..6bce25e37769afff29245d6bb8084161c5857c97 100644
--- a/ui/compositor/layer.h
+++ b/ui/compositor/layer.h
@@ -296,9 +296,8 @@ class COMPOSITOR_EXPORT Layer
   void SetShowSurface(const cc::SurfaceId& surface_id,
                       const cc::SurfaceLayer::SatisfyCallback& satisfy_callback,
                       const cc::SurfaceLayer::RequireCallback& require_callback,
-                      gfx::Size surface_size,
-                      float scale,
-                      gfx::Size frame_size_in_dip);
+                      const gfx::Size& surface_size_in_pixels,
+                      float scale);
 
   bool has_external_content() {
     return texture_layer_.get() || surface_layer_.get();
@@ -388,6 +387,10 @@ class COMPOSITOR_EXPORT Layer
     return damaged_region_;
   }
 
+  const gfx::Size& frame_size_in_dip_for_testing() const {
+    return frame_size_in_dip_;
+  }
+
  private:
   friend class LayerOwner;
   class LayerMirror;