Moves DragDropClient to aura/client

ui/views/controls/menu/menu_message_loop_aura.cc

 // 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.
 
 #include "ui/views/controls/menu/menu_message_loop_aura.h"
 
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "build/build_config.h"
+#include "ui/aura/client/drag_drop_client.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/events/event.h"
 #include "ui/events/platform/platform_event_source.h"
 #include "ui/events/platform/scoped_event_dispatcher.h"
 #include "ui/views/controls/menu/menu_controller.h"
 #include "ui/views/widget/widget.h"
 #include "ui/wm/public/activation_change_observer.h"
 #include "ui/wm/public/activation_client.h"
-#include "ui/wm/public/drag_drop_client.h"
 
 
 using aura::client::ScreenPositionClient;
 
 namespace views {
 
 // static
 MenuMessageLoop* MenuMessageLoop::Create() {
   return new MenuMessageLoopAura;
 }
@@ skipping 46 matching lines @@
 
 #if !defined(OS_WIN)
   // Ask PlatformEventSource to stop dispatching events in this message loop
   // iteration. We want our menu's loop to return before the next event.
   if (ui::PlatformEventSource::GetInstance())
     ui::PlatformEventSource::GetInstance()->StopCurrentEventStream();
 #endif
 }
 
 }  // namespace views