Converts some services to use aura-mus

ui/views/widget/desktop_aura/desktop_window_tree_host.h

Index: ui/views/widget/desktop_aura/desktop_window_tree_host.h
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host.h b/ui/views/widget/desktop_aura/desktop_window_tree_host.h
index 48461a5e2d510b810665d671c47a8764981ed334..1237b4ef73f4d10ca3e50f72cc36810c5d9fc65a 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host.h
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host.h
@@ -53,6 +53,9 @@ class VIEWS_EXPORT DesktopWindowTreeHost {
   // Invoked once the DesktopNativeWidgetAura has been created.
   virtual void OnNativeWidgetCreated(const Widget::InitParams& params) = 0;
 
+  // Called from DesktopNativeWidgetAura::OnWidgetInitDone().
+  virtual void OnWidgetInitDone() = 0;
+
   // Creates and returns the Tooltip implementation to use. Return value is
   // owned by DesktopNativeWidgetAura and lives as long as
   // DesktopWindowTreeHost.