Remove unused includes from core/accessibility, core/css and core/dom

Source/core/dom/VisitedLinkState.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 16 matching lines @@
  */
 
 #ifndef VisitedLinkState_h
 #define VisitedLinkState_h
 
 #include "XLinkNames.h"
 #include "core/dom/Element.h"
 #include "core/platform/LinkHash.h"
 #include "core/rendering/style/RenderStyleConstants.h"
 #include "wtf/HashSet.h"
-#include "wtf/OwnPtr.h"
 
 namespace WebCore {
 
 class Document;
 
 class VisitedLinkState {
     WTF_MAKE_FAST_ALLOCATED;
 public:
     static PassOwnPtr<VisitedLinkState> create(Document*);
 
@@ skipping 14 matching lines @@
 {
     if (!element || !element->isLink())
         return NotInsideLink;
     return determineLinkStateSlowCase(element);
 }
 
 }
 
 #endif