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

Source/core/css/FontFaceSet.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:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 50 matching lines @@
 class FontFaceSet final : public EventTargetWithInlineData, public HeapSupplement<Document>, public ActiveDOMObject {
     USING_GARBAGE_COLLECTED_MIXIN(FontFaceSet);
     typedef HeapSupplement<Document> SupplementType;
 #else
 class FontFaceSet final : public EventTargetWithInlineData, public RefCountedSupplement<Document, FontFaceSet>, public ActiveDOMObject {
     REFCOUNTED_EVENT_TARGET(FontFaceSet);
     typedef RefCountedSupplement<Document, FontFaceSet> SupplementType;
 #endif
     DEFINE_WRAPPERTYPEINFO();
 public:
-    virtual ~FontFaceSet();
+    ~FontFaceSet() override;
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(loading);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(loadingdone);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(loadingerror);
 
     bool check(const String& font, const String& text, ExceptionState&);
     ScriptPromise load(ScriptState*, const String& font, const String& text);
     ScriptPromise ready(ScriptState*);
 
     void add(FontFace*, ExceptionState&);
     void clear();
     bool remove(FontFace*, ExceptionState&);
     void forEach(FontFaceSetForEachCallback*, const ScriptValue& thisArg) const;
     void forEach(FontFaceSetForEachCallback*) const;
     bool has(FontFace*, ExceptionState&) const;
 
     unsigned long size() const;
     AtomicString status() const;
 
-    virtual ExecutionContext* executionContext() const override;
-    virtual const AtomicString& interfaceName() const override;
+    ExecutionContext* executionContext() const override;
+    const AtomicString& interfaceName() const override;
 
     Document* document() const;
 
     void didLayout();
     void beginFontLoading(FontFace*);
     void fontLoaded(FontFace*);
     void loadError(FontFace*);
 
     // ActiveDOMObject
-    virtual void suspend() override;
-    virtual void resume() override;
-    virtual void stop() override;
+    void suspend() override;
+    void resume() override;
+    void stop() override;
 
     static PassRefPtrWillBeRawPtr<FontFaceSet> from(Document&);
     static void didLayout(Document&);
 
     void addFontFacesToFontFaceCache(FontFaceCache*, CSSFontSelector*);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     static PassRefPtrWillBeRawPtr<FontFaceSet> create(Document& document)
@@ skipping 39 matching lines @@
     WillBeHeapListHashSet<RefPtrWillBeMember<FontFace>> m_nonCSSConnectedFaces;
 
     AsyncMethodRunner<FontFaceSet> m_asyncRunner;
 
     FontLoadHistogram m_histogram;
 };
 
 } // namespace blink
 
 #endif // FontFaceSet_h