DisplayCompositor should enforce invariant that frame size and device scale factor are fixed

cc/surfaces/compositor_frame_sink_support.h

Index: cc/surfaces/compositor_frame_sink_support.h
diff --git a/cc/surfaces/compositor_frame_sink_support.h b/cc/surfaces/compositor_frame_sink_support.h
index a0018fd2b71145be41d328e3a349a1e246fe3181..d8d68adb19a2651df130d0347335ab07268bc381 100644
--- a/cc/surfaces/compositor_frame_sink_support.h
+++ b/cc/surfaces/compositor_frame_sink_support.h
@@ -78,6 +78,7 @@ class CC_SURFACES_EXPORT CompositorFrameSinkSupport
   void SetBeginFrameSource(BeginFrameSource* begin_frame_source) override;
   void WillDrawSurface(const LocalSurfaceId& local_surface_id,
                        const gfx::Rect& damage_rect) override;
+  void OnBadFrameReceived() override;
 
   // BeginFrameObserver implementation.
   void OnBeginFrame(const BeginFrameArgs& args) override;