Fix virtual/override/final usage in Source/core/html/.

Source/core/html/HTMLOListElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2010 Apple 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.
  *
@@ skipping 35 matching lines @@
 
     unsigned itemCount() const
     {
         if (m_shouldRecalculateItemCount)
             const_cast<HTMLOListElement*>(this)->recalculateItemCount();
         return m_itemCount;
     }
 
     void recalculateItemCount();
 
-    virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
-    virtual bool isPresentationAttribute(const QualifiedName&) const override;
-    virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
+    void parseAttribute(const QualifiedName&, const AtomicString&) override;
+    bool isPresentationAttribute(const QualifiedName&) const override;
+    void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
 
     int m_start;
     unsigned m_itemCount;
 
     bool m_hasExplicitStart : 1;
     bool m_isReversed : 1;
     bool m_shouldRecalculateItemCount : 1;
 };
 
 } // namespace blink
 
 #endif // HTMLOListElement_h