Move OSExchangeData from src/app to src/ui/base/dragdrop...

views/widget/drop_helper.h

 // Copyright (c) 2006-2008 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 VIEWS_WIDGET_DROP_HELPER_H_
 #define VIEWS_WIDGET_DROP_HELPER_H_
 #pragma once
 
 #include "base/basictypes.h"
 
-class OSExchangeData;
-
 namespace gfx {
 class Point;
 }  // namespace gfx
 
+namespace ui {
+class OSExchangeData;
+}  // namespace ui
+using ui::OSExchangeData;
+
 namespace views {
 
 class RootView;
 class View;
 
 // DropHelper provides support for managing the view a drop is going to occur
 // at during dnd as well as sending the view the appropriate dnd methods.
 // DropHelper is intended to be used by a class that interacts with the system
 // drag and drop. The system class invokes OnDragOver as the mouse moves,
 // then either OnDragExit or OnDrop when the drop is done.
@@ skipping 69 matching lines @@
 
   // The deepest view under the current drop coordinate.
   View* deepest_view_;
 
   DISALLOW_COPY_AND_ASSIGN(DropHelper);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_WIDGET_DROP_HELPER_H_