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

Source/core/svg/SVGAnimateTransformElement.h

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 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 20 matching lines @@
 class SVGAnimateTransformElement final : public SVGAnimateElement {
     DEFINE_WRAPPERTYPEINFO();
 public:
     DECLARE_NODE_FACTORY(SVGAnimateTransformElement);
 
     SVGTransformType transformType() const { return m_type; }
 
 private:
     explicit SVGAnimateTransformElement(Document&);
 
-    virtual bool hasValidAttributeType() override;
+    bool hasValidAttributeType() override;
 
-    virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
+    void parseAttribute(const QualifiedName&, const AtomicString&) override;
 
     SVGTransformType m_type;
 };
 
 } // namespace blink
 
 #endif // SVGAnimateTransformElement_h