Fix virtual/override/final usage in Source/core/{animation,css,style}/.

Source/core/css/FontFaceSetLoadEvent.h

 /*
  * Copyright (C) 2013 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 40 matching lines @@
     static PassRefPtrWillBeRawPtr<FontFaceSetLoadEvent> create(const AtomicString& type, const FontFaceSetLoadEventInit& initializer)
     {
         return adoptRefWillBeNoop(new FontFaceSetLoadEvent(type, initializer));
     }
 
     static PassRefPtrWillBeRawPtr<FontFaceSetLoadEvent> createForFontFaces(const AtomicString& type, const FontFaceArray& fontfaces = FontFaceArray())
     {
         return adoptRefWillBeNoop(new FontFaceSetLoadEvent(type, fontfaces));
     }
 
-    virtual ~FontFaceSetLoadEvent();
+    ~FontFaceSetLoadEvent() override;
 
     FontFaceArray fontfaces() const { return m_fontfaces; }
 
-    virtual const AtomicString& interfaceName() const override;
+    const AtomicString& interfaceName() const override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     FontFaceSetLoadEvent();
     FontFaceSetLoadEvent(const AtomicString&, const FontFaceArray&);
     FontFaceSetLoadEvent(const AtomicString&, const FontFaceSetLoadEventInit&);
 
     FontFaceArray m_fontfaces;
 };
 
 } // namespace blink
 
 #endif // FontFaceSetLoadEvent_h