Update CSS classes to use OVERRIDE / FINAL when needed

Source/core/css/InlineVariablesIterator.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * 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 InlineVariablesIterator_h
 #define InlineVariablesIterator_h
 
 #include "core/css/VariablesIterator.h"
 
 namespace WebCore {
 
 class Element;
 
 // A CSSVariablesIterator implementation for the inline style of an element.
-class InlineVariablesIterator : public AbstractVariablesIterator {
+class InlineVariablesIterator FINAL : public AbstractVariablesIterator {
 public:
     static PassRefPtr<InlineVariablesIterator> create(Element*);
 
 private:
     explicit InlineVariablesIterator(Element*);
     virtual MutableStylePropertySet* propertySet() const OVERRIDE;
 
     RefPtr<Element> m_element;
 };
 
 } // namespace WebCore
 
 #endif // InlineVariablesIterator_h