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

Source/modules/speech/SpeechSynthesisUtterance.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 23 matching lines @@
 
 namespace blink {
 
 class SpeechSynthesisUtterance final : public RefCountedGarbageCollectedEventTargetWithInlineData<SpeechSynthesisUtterance>, public PlatformSpeechSynthesisUtteranceClient, public ContextLifecycleObserver {
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(SpeechSynthesisUtterance);
     DEFINE_WRAPPERTYPEINFO();
     USING_GARBAGE_COLLECTED_MIXIN(SpeechSynthesisUtterance);
 public:
     static SpeechSynthesisUtterance* create(ExecutionContext*, const String&);
 
-    virtual ~SpeechSynthesisUtterance();
+    ~SpeechSynthesisUtterance() override;
 
     const String& text() const { return m_platformUtterance->text(); }
     void setText(const String& text) { m_platformUtterance->setText(text); }
 
     const String& lang() const { return m_platformUtterance->lang(); }
     void setLang(const String& lang) { m_platformUtterance->setLang(lang); }
 
     SpeechSynthesisVoice* voice() const;
     void setVoice(SpeechSynthesisVoice*);
 
@@ skipping 10 matching lines @@
     void setStartTime(double startTime) { m_platformUtterance->setStartTime(startTime); }
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(start);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(end);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(pause);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(resume);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(mark);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(boundary);
 
-    virtual ExecutionContext* executionContext() const override;
+    ExecutionContext* executionContext() const override;
 
     PlatformSpeechSynthesisUtterance* platformUtterance() const { return m_platformUtterance; }
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     SpeechSynthesisUtterance(ExecutionContext*, const String&);
 
     // EventTarget
-    virtual const AtomicString& interfaceName() const override;
+    const AtomicString& interfaceName() const override;
 
     Member<PlatformSpeechSynthesisUtterance> m_platformUtterance;
     Member<SpeechSynthesisVoice> m_voice;
 };
 
 } // namespace blink
 
 #endif // SpeechSynthesisUtterance_h