Fix virtual/override/final usage in Source/modules/.

Source/modules/speech/SpeechSynthesis.h

 /*
  * Copyright (C) 2013 Apple 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 45 matching lines @@
     void pause();
     void resume();
 
     const HeapVector<Member<SpeechSynthesisVoice>>& getVoices();
 
     // Used in testing to use a mock platform synthesizer
     void setPlatformSynthesizer(PlatformSpeechSynthesizer*);
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(voiceschanged);
 
-    virtual ExecutionContext* executionContext() const override;
+    ExecutionContext* executionContext() const override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit SpeechSynthesis(ExecutionContext*);
 
     // PlatformSpeechSynthesizerClient override methods.
-    virtual void voicesDidChange() override;
-    virtual void didStartSpeaking(PlatformSpeechSynthesisUtterance*) override;
-    virtual void didPauseSpeaking(PlatformSpeechSynthesisUtterance*) override;
-    virtual void didResumeSpeaking(PlatformSpeechSynthesisUtterance*) override;
-    virtual void didFinishSpeaking(PlatformSpeechSynthesisUtterance*) override;
-    virtual void speakingErrorOccurred(PlatformSpeechSynthesisUtterance*) override;
-    virtual void boundaryEventOccurred(PlatformSpeechSynthesisUtterance*, SpeechBoundary, unsigned charIndex) override;
+    void voicesDidChange() override;
+    void didStartSpeaking(PlatformSpeechSynthesisUtterance*) override;
+    void didPauseSpeaking(PlatformSpeechSynthesisUtterance*) override;
+    void didResumeSpeaking(PlatformSpeechSynthesisUtterance*) override;
+    void didFinishSpeaking(PlatformSpeechSynthesisUtterance*) override;
+    void speakingErrorOccurred(PlatformSpeechSynthesisUtterance*) override;
+    void boundaryEventOccurred(PlatformSpeechSynthesisUtterance*, SpeechBoundary, unsigned charIndex) override;
 
     void startSpeakingImmediately();
     void handleSpeakingCompleted(SpeechSynthesisUtterance*, bool errorOccurred);
     void fireEvent(const AtomicString& type, SpeechSynthesisUtterance*, unsigned long charIndex, const String& name);
 
     // Returns the utterance at the front of the queue.
     SpeechSynthesisUtterance* currentSpeechUtterance() const;
 
     Member<PlatformSpeechSynthesizer> m_platformSpeechSynthesizer;
     HeapVector<Member<SpeechSynthesisVoice>> m_voiceList;
     HeapDeque<Member<SpeechSynthesisUtterance>> m_utteranceQueue;
     bool m_isPaused;
 
     // EventTarget
-    virtual const AtomicString& interfaceName() const override;
+    const AtomicString& interfaceName() const override;
 };
 
 } // namespace blink
 
 #endif // SpeechSynthesisEvent_h