Rename WindowDragDropDelegate->DragDropDelegate

ui/aura/client/drag_drop_delegate.h

 // Copyright (c) 2011 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_AURA_CLIENT_WINDOW_DRAG_DROP_DELEGATE_H_
-#define UI_AURA_CLIENT_WINDOW_DRAG_DROP_DELEGATE_H_
+#ifndef UI_AURA_CLIENT_DRAG_DROP_DELEGATE_H_
+#define UI_AURA_CLIENT_DRAG_DROP_DELEGATE_H_
 #pragma once
 
 #include "ui/aura/aura_export.h"
 
 namespace aura {
-
 class DropTargetEvent;
+class Window;
+namespace client {
 
 // Delegate interface for drag and drop actions on aura::Window.
-class AURA_EXPORT WindowDragDropDelegate {
+class AURA_EXPORT DragDropDelegate {
  public:
   // OnDragEntered is invoked when the mouse enters this window during a drag &
   // drop session. This is immediately followed by an invocation of
   // OnDragUpdated, and eventually one of OnDragExited or OnPerformDrop.
   virtual void OnDragEntered(const DropTargetEvent& event) = 0;
 
   // Invoked during a drag and drop session while the mouse is over the window.
   // This should return a bitmask of the DragDropTypes::DragOperation supported
   // based on the location of the event. Return 0 to indicate the drop should
   // not be accepted.
   virtual int OnDragUpdated(const DropTargetEvent& event) = 0;
 
   // Invoked during a drag and drop session when the mouse exits the window, or
   // when the drag session was canceled and the mouse was over the window.
   virtual void OnDragExited() = 0;
 
   // Invoked during a drag and drop session when OnDragUpdated returns a valid
   // operation and the user release the mouse.
   virtual int OnPerformDrop(const DropTargetEvent& event) = 0;
 
  protected:
-  virtual ~WindowDragDropDelegate() {}
+  virtual ~DragDropDelegate() {}
 };
 
+AURA_EXPORT void SetDragDropDelegate(Window* window,
+                                     DragDropDelegate* delegate);
+AURA_EXPORT DragDropDelegate* GetDragDropDelegate(Window* window);
+
+}  // namespace client
 }  // namespace aura
 
-#endif  // UI_AURA_CLIENT_WINDOW_DRAG_DROP_DELEGATE_H_
+#endif  // UI_AURA_CLIENT_DRAG_DROP_DELEGATE_H_