Move root_window.* to window_event_dispatcher.*

ui/aura/client/visibility_client.cc

 // Copyright (c) 2012 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.
 
 #include "ui/aura/client/visibility_client.h"
 
-#include "ui/aura/root_window.h"
+#include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_property.h"
 
 DECLARE_WINDOW_PROPERTY_TYPE(aura::client::VisibilityClient*)
 
 namespace aura {
 namespace client {
 
 // A property key to store a client that handles window visibility changes.
 DEFINE_LOCAL_WINDOW_PROPERTY_KEY(
     VisibilityClient*, kWindowVisibilityClientKey, NULL);
 
 
 void SetVisibilityClient(Window* window, VisibilityClient* client) {
   window->SetProperty(kWindowVisibilityClientKey, client);
 }
 
 VisibilityClient* GetVisibilityClient(Window* window) {
   VisibilityClient* visibility_client = NULL;
   aura::Window* current = window;
   do {
     visibility_client = current->GetProperty(kWindowVisibilityClientKey);
     current = current->parent();
   } while (current && !visibility_client);
   return visibility_client;
 }
 
 }  // namespace client
 }  // namespace aura