Refactor WebCore::DragImage.

Source/WebKit/chromium/src/DragClientImpl.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 #ifndef DragClientImpl_h
 #define DragClientImpl_h
 
 #include "core/page/DragActions.h"
 #include "core/page/DragClient.h"
 
 namespace WebCore {
 class ClipBoard;
 class DragData;
+class DragImage;
 class IntPoint;
 class KURL;
 }
 
 namespace WebKit {
 class WebViewImpl;
 
 class DragClientImpl : public WebCore::DragClient {
 public:
     DragClientImpl(WebViewImpl* webView) : m_webView(webView) { }
 
     virtual WebCore::DragDestinationAction actionMaskForDrag(WebCore::DragData*);
     virtual void startDrag(
-        WebCore::DragImageRef dragImage,
+        WebCore::DragImage*,
         const WebCore::IntPoint& dragImageOrigin,
         const WebCore::IntPoint& eventPos,
         WebCore::Clipboard* clipboard,
         WebCore::Frame* frame,
         bool isLinkDrag = false);
 
 private:
     WebViewImpl* m_webView;
 };
 
 } // namespace WebKit
 
 #endif