Mus+Ash: propagate Surface ID to parents

services/ui/ws/server_window_surface.cc

Index: services/ui/ws/server_window_surface.cc
diff --git a/services/ui/ws/server_window_surface.cc b/services/ui/ws/server_window_surface.cc
index 48f4fd588b6a5129d2f6d694c6398341e7f11411..01de6021a8ed06c1b95be5dd8b4bc29e37ed9162 100644
--- a/services/ui/ws/server_window_surface.cc
+++ b/services/ui/ws/server_window_surface.cc
@@ -30,6 +30,7 @@ ServerWindowSurface::ServerWindowSurface(
   cc::SurfaceManager* surface_manager = manager_->GetSurfaceManager();
   surface_manager->RegisterFrameSinkId(frame_sink_id_);
   surface_manager->RegisterSurfaceFactoryClient(frame_sink_id_, this);
+  surface_sequence_generator_.set_frame_sink_id(frame_sink_id_);
 }
 
 ServerWindowSurface::~ServerWindowSurface() {
@@ -68,6 +69,10 @@ cc::SurfaceId ServerWindowSurface::GetSurfaceId() const {
   return cc::SurfaceId(frame_sink_id_, local_frame_id_);
 }
 
+cc::SurfaceSequence ServerWindowSurface::CreateSurfaceSequence() {
+  return surface_sequence_generator_.CreateSurfaceSequence();
+}
+
 ServerWindow* ServerWindowSurface::window() {
   return manager_->window();
 }