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

Source/core/svg/SVGAnimatedInteger.h

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 30 matching lines @@
 
 // SVG Spec: http://www.w3.org/TR/SVG11/types.html#InterfaceSVGAnimatedInteger
 class SVGAnimatedInteger : public SVGAnimatedProperty<SVGInteger> {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<SVGAnimatedInteger> create(SVGElement* contextElement, const QualifiedName& attributeName, PassRefPtrWillBeRawPtr<SVGInteger> initialValue)
     {
         return adoptRefWillBeNoop(new SVGAnimatedInteger(contextElement, attributeName, initialValue));
     }
 
-    virtual void synchronizeAttribute() override;
+    void synchronizeAttribute() override;
 
     void setParentOptionalInteger(SVGAnimatedIntegerOptionalInteger* numberOptionalInteger)
     {
         m_parentIntegerOptionalInteger = numberOptionalInteger;
     }
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     SVGAnimatedInteger(SVGElement* contextElement, const QualifiedName& attributeName, PassRefPtrWillBeRawPtr<SVGInteger> initialValue)
         : SVGAnimatedProperty<SVGInteger>(contextElement, attributeName, initialValue)
         , m_parentIntegerOptionalInteger(nullptr)
     {
     }
 
     RawPtrWillBeMember<SVGAnimatedIntegerOptionalInteger> m_parentIntegerOptionalInteger;
 };
 
 } // namespace blink
 
 #endif // SVGAnimatedInteger_h