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

Source/core/css/FontFace.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 92 matching lines @@
     class LoadFontCallback : public RefCountedWillBeGarbageCollectedFinalized<LoadFontCallback> {
     public:
         virtual ~LoadFontCallback() { }
         virtual void notifyLoaded(FontFace*) = 0;
         virtual void notifyError(FontFace*) = 0;
         DEFINE_INLINE_VIRTUAL_TRACE() { }
     };
     void loadWithCallback(PassRefPtrWillBeRawPtr<LoadFontCallback>, ExecutionContext*);
 
     // ActiveDOMObject
-    virtual bool hasPendingActivity() const override;
+    bool hasPendingActivity() const override;
 
 private:
     static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, PassRefPtr<DOMArrayBuffer> source, const FontFaceDescriptors&);
     static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, PassRefPtr<DOMArrayBufferView>, const FontFaceDescriptors&);
     static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, const String& source, const FontFaceDescriptors&);
 
     explicit FontFace(ExecutionContext*);
     FontFace(ExecutionContext*, const AtomicString& family, const FontFaceDescriptors&);
 
     void initCSSFontFace(Document*, PassRefPtrWillBeRawPtr<CSSValue> src);
@@ skipping 22 matching lines @@
     PersistentWillBeMember<LoadedProperty> m_loadedProperty;
     OwnPtrWillBeMember<CSSFontFace> m_cssFontFace;
     WillBeHeapVector<RefPtrWillBeMember<LoadFontCallback>> m_callbacks;
 };
 
 typedef WillBeHeapVector<RefPtrWillBeMember<FontFace>> FontFaceArray;
 
 } // namespace blink
 
 #endif // FontFace_h