Refactor WebCore::DragImage.

Source/core/loader/EmptyClients.h

 /*
  * Copyright (C) 2006 Eric Seidel (eric@webkit.org)
  * Copyright (C) 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 2012 Samsung Electronics. 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
@@ skipping 21 matching lines @@
 #include "core/dom/DeviceOrientationClient.h"
 #include "core/history/BackForwardClient.h"
 #include "core/inspector/InspectorClient.h"
 #include "core/loader/FrameLoaderClient.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/ContextMenuClient.h"
 #include "core/page/DragClient.h"
 #include "core/page/EditorClient.h"
 #include "core/page/FocusDirection.h"
 #include "core/page/Page.h"
+#include "core/platform/DragImage.h"
 #include "core/platform/graphics/FloatRect.h"
 #include "core/platform/network/ResourceError.h"
 #include "core/platform/text/TextCheckerClient.h"
 #include "modules/device_orientation/DeviceMotionClient.h"
+#include "public/platform/WebScreenInfo.h"
+#include "wtf/Forward.h"
 
-#include "public/platform/WebScreenInfo.h"
 #include <v8.h>
 
 /*
  This file holds empty Client stubs for use by WebCore.
  Viewless element needs to create a dummy Page->Frame->FrameView tree for use in parsing or executing JavaScript.
  This tree depends heavily on Clients (usually provided by WebKit classes).
 
  This file was first created for SVGImage as it had no way to access the current Page (nor should it,
  since Images are not tied to a page).
  See http://bugs.webkit.org/show_bug.cgi?id=5971 for the original discussion about this file.
@@ skipping 295 matching lines @@
     virtual ~EmptyContextMenuClient() {  }
     virtual void showContextMenu(const ContextMenu*) OVERRIDE { }
 };
 
 class EmptyDragClient : public DragClient {
     WTF_MAKE_NONCOPYABLE(EmptyDragClient); WTF_MAKE_FAST_ALLOCATED;
 public:
     EmptyDragClient() { }
     virtual ~EmptyDragClient() {}
     virtual DragDestinationAction actionMaskForDrag(DragData*) OVERRIDE { return DragDestinationActionNone; }
-    virtual void startDrag(DragImageRef, const IntPoint&, const IntPoint&, Clipboard*, Frame*, bool) OVERRIDE { }
+    virtual void startDrag(DragImage*, const IntPoint&, const IntPoint&, Clipboard*, Frame*, bool) OVERRIDE { }
 };
 
 class EmptyInspectorClient : public InspectorClient {
     WTF_MAKE_NONCOPYABLE(EmptyInspectorClient); WTF_MAKE_FAST_ALLOCATED;
 public:
     EmptyInspectorClient() { }
     virtual ~EmptyInspectorClient() { }
 
     virtual void highlight() OVERRIDE { }
     virtual void hideHighlight() OVERRIDE { }
@@ skipping 28 matching lines @@
     virtual int forwardListCount() OVERRIDE { return 0; }
     virtual bool isActive() OVERRIDE { return false; }
     virtual void close() OVERRIDE { }
 };
 
 void fillWithEmptyClients(Page::PageClients&);
 
 }
 
 #endif // EmptyClients_h