Remove duplicated headers from core/

Source/core/css/SelectorFilter.cpp

 /*
  * 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 12 matching lines @@
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
 #include "core/css/SelectorFilter.h"
 
 #include "core/css/CSSSelector.h"
-#include "core/dom/Element.h"
 
 namespace WebCore {
 
 // Salt to separate otherwise identical string hashes so a class-selector like .article won't match <article> elements.
 enum { TagNameSalt = 13, IdAttributeSalt = 17, ClassAttributeSalt = 19 };
 
 static inline void collectElementIdentifierHashes(const Element& element, Vector<unsigned, 4>& identifierHashes)
 {
     identifierHashes.append(element.localName().impl()->existingHash() * TagNameSalt);
     if (element.hasID())
@@ skipping 122 matching lines @@
         }
         if (hash == end)
             return;
         relation = selector->relation();
         relationIsAffectedByPseudoContent = selector->relationIsAffectedByPseudoContent();
     }
     *hash = 0;
 }
 
 }