Rebuild aura::Window's property system on top of mojo::View.

mojo/services/public/interfaces/view_manager/view_manager.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 mojo;
 
 import "mojo/public/interfaces/application/service_provider.mojom";
 import "mojo/services/public/interfaces/geometry/geometry.mojom";
 import "mojo/services/public/interfaces/input_events/input_events.mojom";
 import "mojo/services/public/interfaces/surfaces/surface_id.mojom";
@@ skipping 173 matching lines @@
   // are from connection 2 and A from connection 1 with all views visible and
   // drawn and the visiblity of A changes to false, then connection 2 is told
   // the drawn state of B1 has changed (to false), but is not told anything
   // about B2 as it's drawn state can be calculated from that of B1.
   //
   // NOTE: This is not invoked if OnViewVisibilityChanged() is invoked.
   OnViewDrawnStateChanged(uint32 view, bool drawn);
 
   // Invoked when a view property is changed. If this change is a removal,
   // |new_data| is null.
-  OnViewPropertyChanged(uint32 view, string name, array<uint8>? new_data);
+  OnViewSharedPropertyChanged(uint32 view, string name, array<uint8>? new_data);
 
   // Invoked when an event is targeted at the specified view.
   OnViewInputEvent(uint32 view, mojo.Event event) => ();
 };