Start using display.mojom.Display in mus+ash.

services/ui/public/interfaces/display.mojom

 // Copyright 2016 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;
 
 import "services/ui/public/interfaces/window_manager_constants.mojom";
 
 interface DisplayManagerObserver {
   // Sent when the observer is added. Gives the initial state.
-  OnDisplays(array<Display> displays);
+  OnDisplays(array<WsDisplay> displays);
 
   // The specified set of displays has changed in some way. This is used both
   // when a new display is added, or when a property of a display changes.
   // |displays| does not necessarily contain the complete set of displays,
   // only those that changed.
-  OnDisplaysChanged(array<Display> displays);
+  OnDisplaysChanged(array<WsDisplay> displays);
 
   // An existing display was removed.
   OnDisplayRemoved(int64 id);
 };
 
 interface DisplayManager {
   AddObserver(DisplayManagerObserver observer);
 };