Move root_window.* to window_event_dispatcher.*

ui/aura/client/window_tree_client.cc

 // Copyright (c) 2013 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/window_tree_client.h"
 
 #include "ui/aura/env.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::WindowTreeClient*)
 
 namespace aura {
 namespace client {
 
 DEFINE_WINDOW_PROPERTY_KEY(
     WindowTreeClient*, kRootWindowWindowTreeClientKey, NULL);
 
@@ skipping 23 matching lines @@
   // |context| must be attached to a hierarchy with a WindowTreeClient.
   WindowTreeClient* client = GetWindowTreeClient(context);
   DCHECK(client);
   Window* default_parent =
       client->GetDefaultParent(context, window, screen_bounds);
   default_parent->AddChild(window);
 }
 
 }  // namespace client
 }  // namespace aura