Mandoline: Support transforms and clipping of OOPIFs and events

components/mus/surfaces/top_level_display_client.h

Index: components/mus/surfaces/top_level_display_client.h
diff --git a/components/mus/surfaces/top_level_display_client.h b/components/mus/surfaces/top_level_display_client.h
index 3122c44eb535c08da16c73b4a7d8cf7211008eed..3d714e703c8ec6760005444276f63c165b95714a 100644
--- a/components/mus/surfaces/top_level_display_client.h
+++ b/components/mus/surfaces/top_level_display_client.h
@@ -42,6 +42,9 @@ class TopLevelDisplayClient : public cc::DisplayClient,
   void SubmitCompositorFrame(scoped_ptr<cc::CompositorFrame> frame,
                              const base::Closure& callback);
 
+  const cc::CompositorFrame* GetLastCompositorFrame() const;
+
+  const cc::SurfaceId& surface_id() const { return cc_id_; }
  private:
   // DisplayClient implementation.
   // TODO(rjkroege, fsamuel): This won't work correctly with multiple displays.