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

Source/core/svg/SVGPathSegClosePath.h

 /*
  * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 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 24 matching lines @@
 
     PassRefPtrWillBeRawPtr<SVGPathSeg> clone() override
     {
         return adoptRefWillBeNoop(new SVGPathSegClosePath(nullptr));
     }
 
 private:
     SVGPathSegClosePath(SVGPathElement* element)
         : SVGPathSeg(element) { }
 
-    virtual unsigned short pathSegType() const override { return PATHSEG_CLOSEPATH; }
-    virtual String pathSegTypeAsLetter() const override { return "Z"; }
+    unsigned short pathSegType() const override { return PATHSEG_CLOSEPATH; }
+    String pathSegTypeAsLetter() const override { return "Z"; }
 };
 
 } // namespace blink
 
 #endif // SVGPathSegClosePath_h