Add a test checking that compositor works in a reused renderer.

cc/surfaces/compositor_frame_sink_support.cc

Index: cc/surfaces/compositor_frame_sink_support.cc
diff --git a/cc/surfaces/compositor_frame_sink_support.cc b/cc/surfaces/compositor_frame_sink_support.cc
index 0b229c5ae0b4938c99c698d18e1ba92026325ac6..6ddf57262dd764f6a6651bdf201650db2e00acb3 100644
--- a/cc/surfaces/compositor_frame_sink_support.cc
+++ b/cc/surfaces/compositor_frame_sink_support.cc
@@ -181,6 +181,10 @@ void CompositorFrameSinkSupport::ClaimTemporaryReference(
   surface_manager_->AssignTemporaryReference(surface_id, frame_sink_id_);
 }
 
+void CompositorFrameSinkSupport::RunDrawCallbacks() {
+  surface_factory_.RunDrawCallbacks();
+}
+
 void CompositorFrameSinkSupport::ReferencedSurfacesChanged(
     const LocalSurfaceId& local_surface_id,
     const std::vector<SurfaceId>* active_referenced_surfaces,