Return resources immediately after a Surface is destroyed

cc/surfaces/compositor_frame_sink_support_unittest.cc

Index: cc/surfaces/compositor_frame_sink_support_unittest.cc
diff --git a/cc/surfaces/compositor_frame_sink_support_unittest.cc b/cc/surfaces/compositor_frame_sink_support_unittest.cc
index fe1156e9e27ce4f125435585e7805c09edb31d0a..d39b9e213f31e6f545be0d4c6107667cee7c3a37 100644
--- a/cc/surfaces/compositor_frame_sink_support_unittest.cc
+++ b/cc/surfaces/compositor_frame_sink_support_unittest.cc
@@ -123,6 +123,7 @@ class CompositorFrameSinkSupportTest : public testing::Test,
   void OnSurfaceDamaged(const SurfaceId& id, bool* changed) override {
     *changed = true;
   }
+  void OnSurfaceDiscarded(const SurfaceId& surface_id) override {}
 
   void SubmitCompositorFrameWithResources(ResourceId* resource_ids,
                                           size_t num_resource_ids) {