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

Source/core/svg/SVGAnimatedAngle.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 29 matching lines @@
 class SVGMarkerElement;
 
 class SVGAnimatedAngle final : public SVGAnimatedProperty<SVGAngle> {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<SVGAnimatedAngle> create(SVGMarkerElement* contextElement)
     {
         return adoptRefWillBeNoop(new SVGAnimatedAngle(contextElement));
     }
 
-    virtual ~SVGAnimatedAngle();
+    ~SVGAnimatedAngle() override;
 
     SVGAnimatedEnumeration<SVGMarkerOrientType>* orientType() { return m_orientType.get(); }
 
     // SVGAnimatedPropertyBase:
 
-    virtual void synchronizeAttribute() override;
+    void synchronizeAttribute() override;
 
-    virtual void setAnimatedValue(PassRefPtrWillBeRawPtr<SVGPropertyBase>) override;
-    virtual void animationEnded() override;
+    void setAnimatedValue(PassRefPtrWillBeRawPtr<SVGPropertyBase>) override;
+    void animationEnded() override;
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     explicit SVGAnimatedAngle(SVGMarkerElement* contextElement);
 
 private:
     RefPtrWillBeMember<SVGAnimatedEnumeration<SVGMarkerOrientType>> m_orientType;
 };
 
 } // namespace blink
 
 #endif // SVGAnimatedAngle_h