Refactor WebCore::DragImage.

Source/core/page/Frame.h

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999-2001 Lars Knoll <knoll@kde.org>
  *                     1999-2001 Antti Koivisto <koivisto@kde.org>
  *                     2000-2001 Simon Hausmann <hausmann@kde.org>
  *                     2000-2001 Dirk Mueller <mueller@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
@@ skipping 15 matching lines @@
  */
 
 #ifndef Frame_h
 #define Frame_h
 
 #include "core/loader/FrameLoader.h"
 #include "core/loader/NavigationScheduler.h"
 #include "core/page/AdjustViewSizeOrNot.h"
 #include "core/page/FrameTree.h"
 #include "core/platform/ScrollTypes.h"
-#include "core/platform/chromium/DragImageRef.h"
 #include "core/platform/graphics/IntSize.h"
-#include <wtf/RefCounted.h>
+#include "wtf/Forward.h"
+#include "wtf/RefCounted.h"
 
 namespace WebCore {
 
     class AnimationController;
     class Color;
     class DOMWindow;
     class Document;
+    class DragImage;
     class Editor;
     class Element;
     class EventHandler;
     class FloatSize;
     class FrameDestructionObserver;
     class FrameSelection;
     class FrameView;
     class HTMLTableCellElement;
     class IntPoint;
     class Node;
@@ skipping 92 matching lines @@
         int orientation() const { return m_orientation; }
 #endif
 
         void clearTimers();
         static void clearTimers(FrameView*, Document*);
 
         String documentTypeString() const;
 
         String displayStringModifiedByEncoding(const String&) const;
 
-        DragImageRef nodeImage(Node*);
-        DragImageRef dragImageForSelection();
+        PassOwnPtr<DragImage> nodeImage(Node*);
+        PassOwnPtr<DragImage> dragImageForSelection();
 
         VisiblePosition visiblePositionForPoint(const IntPoint& framePoint);
         Document* documentAtPoint(const IntPoint& windowPoint);
         PassRefPtr<Range> rangeForPoint(const IntPoint& framePoint);
 
         // Should only be called on the main frame of a page.
         void notifyChromeClientWheelEventHandlerCountChanged() const;
 
         bool isURLAllowed(const KURL&) const;
 
@@ skipping 105 matching lines @@
     }
 
     inline EventHandler* Frame::eventHandler() const
     {
         return m_eventHandler.get();
     }
 
 } // namespace WebCore
 
 #endif // Frame_h