cc: Plumbing for BeginFrameSource based on Surfaces

components/mus/ws/server_window_surface.cc

Index: components/mus/ws/server_window_surface.cc
diff --git a/components/mus/ws/server_window_surface.cc b/components/mus/ws/server_window_surface.cc
index 9e1a4725ada96d9a54332c89886fde6dc1a15287..ef42bd095d2a0caa448e742198836f5c4d5c57d0 100644
--- a/components/mus/ws/server_window_surface.cc
+++ b/components/mus/ws/server_window_surface.cc
@@ -111,6 +111,13 @@ void ServerWindowSurface::ReturnResources(
       mojo::Array<mojom::ReturnedResourcePtr>::From(resources));
 }
 
+void ServerWindowSurface::SetBeginFrameSource(
+    cc::SurfaceId surface_id,
+    cc::BeginFrameSource* begin_frame_source) {
+  // TODO(tansell): Implement this.
+  NOTIMPLEMENTED();
+}
+
 }  // namespace ws
 
 }  // namespace mus