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

Source/core/html/HTMLFrameSetElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2004, 2006, 2009, 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 42 matching lines @@
     DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(error);
     DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(focus);
     DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(load);
     DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(resize);
     DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(scroll);
     DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(orientationchange);
 
 private:
     explicit HTMLFrameSetElement(Document&);
 
-    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;
 
-    virtual void attach(const AttachContext& = AttachContext()) override;
-    virtual bool layoutObjectIsNeeded(const ComputedStyle&) override;
-    virtual LayoutObject* createLayoutObject(const ComputedStyle&) override;
+    void attach(const AttachContext& = AttachContext()) override;
+    bool layoutObjectIsNeeded(const ComputedStyle&) override;
+    LayoutObject* createLayoutObject(const ComputedStyle&) override;
 
-    virtual void defaultEventHandler(Event*) override;
+    void defaultEventHandler(Event*) override;
 
-    virtual InsertionNotificationRequest insertedInto(ContainerNode*) override;
-    virtual void willRecalcStyle(StyleRecalcChange) override;
+    InsertionNotificationRequest insertedInto(ContainerNode*) override;
+    void willRecalcStyle(StyleRecalcChange) override;
 
     Vector<HTMLDimension> m_rowLengths;
     Vector<HTMLDimension> m_colLengths;
 
     int m_border;
     bool m_borderSet;
 
     bool m_borderColorSet;
 
     bool m_frameborder;
     bool m_frameborderSet;
     bool m_noresize;
 };
 
 } // namespace blink
 
 #endif // HTMLFrameSetElement_h