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

Source/core/css/MediaQueryListListener.h

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Library General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  Library General Public License for more details.
  *
  *  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.
  */
 
 #ifndef MediaQueryListListener_h
 #define MediaQueryListListener_h
 
 #include "bindings/v8/ScriptState.h"
 #include "bindings/v8/ScriptValue.h"
 #include "wtf/RefCounted.h"
-#include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class MediaQueryList;
 
 // See http://dev.w3.org/csswg/cssom-view/#the-mediaquerylist-interface
 
 class MediaQueryListListener : public RefCounted<MediaQueryListListener> {
 public:
     static PassRefPtr<MediaQueryListListener> create(const ScriptValue& value)
     {
         if (!value.isFunction())
             return 0;
         return adoptRef(new MediaQueryListListener(value));
     }
     void queryChanged(ScriptState*, MediaQueryList*);
 
     bool operator==(const MediaQueryListListener& other) const { return m_value == other.m_value; }
 
 private:
     MediaQueryListListener(const ScriptValue& value) : m_value(value) { }
 
     ScriptValue m_value;
 };
 
 }
 
 #endif // MediaQueryListListener_h