Refactor WebCore::DragImage.

Source/core/page/DragClient.h

 /*
  * Copyright (C) 2007 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
  */
 
 
 #ifndef DragClient_h
 #define DragClient_h
 
 #include "core/page/DragActions.h"
-#include "core/platform/DragImage.h"
-#include "core/platform/graphics/IntPoint.h"
 
 namespace WebCore {
-    
-    class Clipboard;
-    class DragData;
-    class Frame;
-    
-    class DragClient {
-    public:
-        virtual DragDestinationAction actionMaskForDrag(DragData*) = 0;
-        virtual void startDrag(DragImageRef dragImage, const IntPoint& dragImageOrigin, const IntPoint& eventPos, Clipboard*, Frame*, bool linkDrag = false) = 0;
-        virtual ~DragClient() { }
-    };
-    
+
+class Clipboard;
+class DragData;
+class DragImage;
+class Frame;
+class IntPoint;
+
+class DragClient {
+public:
+    virtual DragDestinationAction actionMaskForDrag(DragData*) = 0;
+    virtual void startDrag(DragImage*, const IntPoint& dragImageOrigin, const IntPoint& eventPos, Clipboard*, Frame*, bool linkDrag = false) = 0;
+    virtual ~DragClient() { }
+};
+
 }
 
 #endif // !DragClient_h