Enforce constant size and device scale factor for surfaces

cc/test/test_compositor_frame_sink.h

Index: cc/test/test_compositor_frame_sink.h
diff --git a/cc/test/test_compositor_frame_sink.h b/cc/test/test_compositor_frame_sink.h
index cbab0121c1397263c8449bd4e2d9244afbbfdee1..e80471aeb5db5bdf0f641ff5488256c59adf83d4 100644
--- a/cc/test/test_compositor_frame_sink.h
+++ b/cc/test/test_compositor_frame_sink.h
@@ -87,6 +87,7 @@ class TestCompositorFrameSink : public CompositorFrameSink,
   void ReclaimResources(const ReturnedResourceArray& resources) override;
   void WillDrawSurface(const LocalSurfaceId& local_surface_id,
                        const gfx::Rect& damage_rect) override;
+  void DidRejectCompositorFrame() override;
 
   // DisplayClient implementation.
   void DisplayOutputSurfaceLost() override;
@@ -112,7 +113,9 @@ class TestCompositorFrameSink : public CompositorFrameSink,
   // CompositorFrameSink is owned/destroyed on the compositor thread.
   std::unique_ptr<SurfaceManager> surface_manager_;
   std::unique_ptr<LocalSurfaceIdAllocator> local_surface_id_allocator_;
-  LocalSurfaceId delegated_local_surface_id_;
+  LocalSurfaceId local_surface_id_;
+  gfx::Size display_size_;
+  float device_scale_factor_ = 0;
 
   // Uses surface_manager_.
   std::unique_ptr<CompositorFrameSinkSupport> support_;