Move root_window.* to window_event_dispatcher.*

ash/wm/drag_window_resizer.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 "ash/wm/drag_window_resizer.h"
 
 #include "ash/display/mouse_cursor_event_filter.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_util.h"
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/user/tray_user.h"
 #include "ash/wm/coordinate_conversion.h"
 #include "ash/wm/drag_window_controller.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/env.h"
-#include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
+#include "ui/aura/window_event_dispatcher.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/corewm/window_util.h"
 
 namespace ash {
 namespace internal {
 
 namespace {
 
@@ skipping 245 matching lines @@
   if (!tray_user->TransferWindowToUser(GetTarget())) {
     GetTarget()->layer()->SetOpacity(old_opacity);
     return false;
   }
   RevertDrag();
   return true;
 }
 
 }  // namespace internal
 }  // namespace ash