mus-ws: Plumb FrameSinkId to Children

ui/views/mus/desktop_window_tree_host_mus.cc

Index: ui/views/mus/desktop_window_tree_host_mus.cc
diff --git a/ui/views/mus/desktop_window_tree_host_mus.cc b/ui/views/mus/desktop_window_tree_host_mus.cc
index c991bfc5cf6ae2ca37a69d5f4a7126b8597900bc..88edf2642b75d234ecb28d77c39b6d0dc063f6d5 100644
--- a/ui/views/mus/desktop_window_tree_host_mus.cc
+++ b/ui/views/mus/desktop_window_tree_host_mus.cc
@@ -185,8 +185,10 @@ void OnMoveLoopEnd(bool* out_success,
 DesktopWindowTreeHostMus::DesktopWindowTreeHostMus(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura,
+    const cc::FrameSinkId& frame_sink_id,
     const std::map<std::string, std::vector<uint8_t>>* mus_properties)
     : aura::WindowTreeHostMus(MusClient::Get()->window_tree_client(),
+                              frame_sink_id,
                               mus_properties),
       native_widget_delegate_(native_widget_delegate),
       desktop_native_widget_aura_(desktop_native_widget_aura),