WIP: Propagate SurfaceID up window tree hierarchy

services/ui/public/cpp/tests/test_window_tree.h

Index: services/ui/public/cpp/tests/test_window_tree.h
diff --git a/services/ui/public/cpp/tests/test_window_tree.h b/services/ui/public/cpp/tests/test_window_tree.h
index a8c24301f880189615b4f588c1eed24f3c6b9f6d..747b8c222faa2df6430b7860b391f39a1aa8f49d 100644
--- a/services/ui/public/cpp/tests/test_window_tree.h
+++ b/services/ui/public/cpp/tests/test_window_tree.h
@@ -63,6 +63,8 @@ class TestWindowTree : public mojom::WindowTree {
                      mojom::SurfaceType type,
                      mojo::InterfaceRequest<mojom::Surface> surface,
                      mojom::SurfaceClientPtr client) override;
+  void SatisfySurfaceSequence(uint32_t window_id,
+                              const cc::SurfaceSequence& sequence) override;
   void AddWindow(uint32_t change_id, uint32_t parent, uint32_t child) override;
   void RemoveWindowFromParent(uint32_t change_id, uint32_t window_id) override;
   void AddTransientWindow(uint32_t change_id,