Remove SurfaceSequence from mus client code.

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 1f51607e617e4aed4cd4efe98e7c9810f954c4c6..d07632348b537a6d7e4d292864839db57aba1a3d 100644
--- a/services/ui/ws/window_tree_client_unittest.cc
+++ b/services/ui/ws/window_tree_client_unittest.cc
@@ -382,11 +382,10 @@ class TestWindowTreeClient : public mojom::WindowTreeClient,
 
   void OnWindowSurfaceChanged(Id window_id,
                               const cc::SurfaceId& surface_id,
-                              const cc::SurfaceSequence& surface_sequence,
                               const gfx::Size& frame_size,
                               float device_scale_factor) override {
-    tracker_.OnWindowSurfaceChanged(window_id, surface_id, surface_sequence,
-                                    frame_size, device_scale_factor);
+    tracker_.OnWindowSurfaceChanged(window_id, surface_id, frame_size,
+                                    device_scale_factor);
   }
 
   void OnDragEnter(uint32_t window,