Removing ServerWindowCompositorFrameSinkManager::ShouldDraw()

services/ui/public/interfaces/mus_constants.mojom

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 module ui.mojom;
 
 enum OrderDirection {
   ABOVE = 1,
   BELOW,
-};
-
-// If this property is present on a window then the window is only shown once
-// the underlay has been provided. This property is only checked once at
-// construction time.
-const string kWaitForUnderlay_Property = "property:wait-for-underlay";
+};