Mus+Ash: propagate Surface ID to parents

services/ui/ws/window_tree_client_unittest.cc

Index: services/ui/ws/window_tree_client_unittest.cc
diff --git a/services/ui/ws/window_tree_client_unittest.cc b/services/ui/ws/window_tree_client_unittest.cc
index 1f0276615a000f5172426dfb1df613df9b24700f..5fb3b3a71534f7b8d0343df31715fce4ed9d0026 100644
--- a/services/ui/ws/window_tree_client_unittest.cc
+++ b/services/ui/ws/window_tree_client_unittest.cc
@@ -377,6 +377,12 @@ class TestWindowTreeClient : public mojom::WindowTreeClient,
     NOTIMPLEMENTED();
   }
 
+  void OnWindowSurfaceCreated(Id window_id,
+                              const cc::SurfaceId& surface_id,
+                              const cc::SurfaceSequence& surface_sequence,
+                              const gfx::Size& frame_size,
+                              float device_scale_factor) override {}
+
   void OnDragEnter(uint32_t window,
                    uint32_t key_state,
                    const gfx::Point& position,