Wires up drag/drop for aura-mus

ui/aura/client/drag_drop_delegate.h

 // 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.
 
-#ifndef UI_WM_PUBLIC_DRAG_DROP_DELEGATE_H_
-#define UI_WM_PUBLIC_DRAG_DROP_DELEGATE_H_
+#ifndef UI_AURA_CLIENT_DRAG_DROP_DELEGATE_H_
+#define UI_AURA_CLIENT_DRAG_DROP_DELEGATE_H_
 
 #include "ui/aura/aura_export.h"
 
 namespace ui {
 class DropTargetEvent;
 }
 
 namespace aura {
 class Window;
 namespace client {
@@ skipping 24 matching lines @@
   virtual ~DragDropDelegate() {}
 };
 
 AURA_EXPORT void SetDragDropDelegate(Window* window,
                                      DragDropDelegate* delegate);
 AURA_EXPORT DragDropDelegate* GetDragDropDelegate(Window* window);
 
 }  // namespace client
 }  // namespace aura
 
-#endif  // UI_WM_PUBLIC_DRAG_DROP_DELEGATE_H_
+#endif  // UI_AURA_CLIENT_DRAG_DROP_DELEGATE_H_