Fix virtual/override/final usage in Source/core/dom/.

Source/core/dom/MessagePort.h

 /*
  * Copyright (C) 2008 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 47 matching lines @@
 class CORE_EXPORT MessagePort
     : public EventTargetWithInlineData
     , public RefCountedWillBeNoBase<MessagePort>
     , public ActiveDOMObject
     , public WebMessagePortChannelClient {
     DEFINE_WRAPPERTYPEINFO();
     REFCOUNTED_EVENT_TARGET(MessagePort);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MessagePort);
 public:
     static PassRefPtrWillBeRawPtr<MessagePort> create(ExecutionContext&);
-    virtual ~MessagePort();
+    ~MessagePort() override;
 
     void postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue> message, const MessagePortArray*, ExceptionState&);
 
     void start();
     void close();
 
     void entangle(PassOwnPtr<WebMessagePortChannel>);
     PassOwnPtr<WebMessagePortChannel> disentangle();
 
     static PassOwnPtr<WebMessagePortChannelArray> toWebMessagePortChannelArray(PassOwnPtr<MessagePortChannelArray>);
     static PassOwnPtrWillBeRawPtr<MessagePortArray> toMessagePortArray(ExecutionContext*, const WebMessagePortChannelArray&);
 
     // Returns 0 if there is an exception, or if the passed-in array is 0/empty.
     static PassOwnPtr<MessagePortChannelArray> disentanglePorts(ExecutionContext*, const MessagePortArray*, ExceptionState&);
 
     // Returns 0 if the passed array is 0/empty.
     static PassOwnPtrWillBeRawPtr<MessagePortArray> entanglePorts(ExecutionContext&, PassOwnPtr<MessagePortChannelArray>);
 
     bool started() const { return m_started; }
 
-    virtual const AtomicString& interfaceName() const override;
-    virtual ExecutionContext* executionContext() const override { return ActiveDOMObject::executionContext(); }
-    virtual MessagePort* toMessagePort() override { return this; }
+    const AtomicString& interfaceName() const override;
+    ExecutionContext* executionContext() const override { return ActiveDOMObject::executionContext(); }
+    MessagePort* toMessagePort() override { return this; }
 
     // ActiveDOMObject implementation.
-    virtual bool hasPendingActivity() const override;
-    virtual void stop() override { close(); }
+    bool hasPendingActivity() const override;
+    void stop() override { close(); }
 
     void setOnmessage(PassRefPtr<EventListener> listener)
     {
         setAttributeEventListener(EventTypeNames::message, listener);
         start();
     }
     EventListener* onmessage() { return getAttributeEventListener(EventTypeNames::message); }
 
     // A port starts out its life entangled, and remains entangled until it is closed or is cloned.
     bool isEntangled() const { return !m_closed && !isNeutered(); }
 
     // A port gets neutered when it is transferred to a new owner via postMessage().
     bool isNeutered() const { return !m_entangledChannel; }
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     explicit MessagePort(ExecutionContext&);
     bool tryGetMessage(RefPtr<SerializedScriptValue>& message, OwnPtr<MessagePortChannelArray>& channels);
 
 private:
     // WebMessagePortChannelClient implementation.
-    virtual void messageAvailable() override;
-    virtual v8::Isolate* scriptIsolate() override;
-    virtual v8::Local<v8::Context> scriptContextForMessageConversion() override;
+    void messageAvailable() override;
+    v8::Isolate* scriptIsolate() override;
+    v8::Local<v8::Context> scriptContextForMessageConversion() override;
     void dispatchMessages();
 
     OwnPtr<WebMessagePortChannel> m_entangledChannel;
 
     bool m_started;
     bool m_closed;
 
     WeakPtrFactory<MessagePort> m_weakFactory;
 
     RefPtr<ScriptState> m_scriptStateForConversion;
 };
 
 } // namespace blink
 
 #endif // MessagePort_h