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

Source/core/svg/SVGTextContentElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org>
  *
  * 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,
@@ skipping 37 matching lines @@
 
 // SVGTextContentElement's 'textLength' attribute needs special handling.
 // It should return getComputedTextLength() when textLength is not specified manually.
 class SVGAnimatedTextLength final : public SVGAnimatedLength {
 public:
     static PassRefPtrWillBeRawPtr<SVGAnimatedTextLength> create(SVGTextContentElement* contextElement)
     {
         return adoptRefWillBeNoop(new SVGAnimatedTextLength(contextElement));
     }
 
-    virtual SVGLengthTearOff* baseVal() override
+    SVGLengthTearOff* baseVal() override
     {
         SVGTextContentElement* textContentElement = toSVGTextContentElement(contextElement());
         if (!textContentElement->textLengthIsSpecifiedByUser())
             baseValue()->newValueSpecifiedUnits(LengthTypeNumber, textContentElement->getComputedTextLength());
 
         return SVGAnimatedLength::baseVal();
     }
 
 private:
     SVGAnimatedTextLength(SVGTextContentElement* contextElement)
@@ skipping 189 matching lines @@
 
     if (!layoutObject->isSVGText() && !layoutObject->isSVGInline())
         return nullptr;
 
     SVGElement* element = toSVGElement(layoutObject->node());
     ASSERT(element);
     return isSVGTextContentElement(*element) ? toSVGTextContentElement(element) : 0;
 }
 
 }