Clean up forward declarations in Source/core/page

Source/core/page/DragData.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 20 matching lines @@
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/HashMap.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class DataObject;
 class DocumentFragment;
 class LocalFrame;
-class KURL;
 class Range;
 
 enum DragApplicationFlags {
     DragApplicationNone = 0,
     DragApplicationIsModal = 1,
     DragApplicationIsSource = 2,
     DragApplicationHasAttachedSheet = 4,
     DragApplicationIsCopyKeyDown = 8
 };
 
@@ skipping 27 matching lines @@
     IntPoint m_clientPosition;
     IntPoint m_globalPosition;
     DataObject* m_platformDragData;
     DragOperation m_draggingSourceOperationMask;
     DragApplicationFlags m_applicationFlags;
 };
 
 }
 
 #endif // !DragData_h