Move root_window.* to window_event_dispatcher.*

ui/aura/window_tree_host_win.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/window_tree_host_win.h"
 
 #include <windows.h>
 
 #include <algorithm>
 
 #include "base/message_loop/message_loop.h"
 #include "ui/aura/client/cursor_client.h"
-#include "ui/aura/root_window.h"
+#include "ui/aura/window_event_dispatcher.h"
 #include "ui/base/cursor/cursor_loader_win.h"
 #include "ui/base/view_prop.h"
 #include "ui/events/event.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/insets.h"
 #include "ui/gfx/screen.h"
 
 using std::max;
 using std::min;
 
@@ skipping 281 matching lines @@
 namespace test {
 
 // static
 void SetUsePopupAsRootWindowForTest(bool use) {
   use_popup_as_root_window_for_test = use;
 }
 
 }  // namespace test
 
 }  // namespace aura