Fix virtual/override/final usage in the rest of Source/core/.

Source/core/events/MessageEvent.h

 /*
  * Copyright (C) 2007 Henry Mason (hmason@mac.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 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
@@ skipping 54 matching lines @@
     }
     static PassRefPtrWillBeRawPtr<MessageEvent> create(Blob* data, const String& origin = String())
     {
         return adoptRefWillBeNoop(new MessageEvent(data, origin));
     }
     static PassRefPtrWillBeRawPtr<MessageEvent> create(PassRefPtr<DOMArrayBuffer> data, const String& origin = String())
     {
         return adoptRefWillBeNoop(new MessageEvent(data, origin));
     }
     static PassRefPtrWillBeRawPtr<MessageEvent> create(const AtomicString& type, const MessageEventInit& initializer, ExceptionState&);
-    virtual ~MessageEvent();
+    ~MessageEvent() override;
 
     void initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, ScriptValue data, const String& origin, const String& lastEventId, DOMWindow* source, MessagePortArray*);
     void initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, DOMWindow* source, MessagePortArray*);
 
     const String& origin() const { return m_origin; }
     const String& lastEventId() const { return m_lastEventId; }
     EventTarget* source() const { return m_source.get(); }
     MessagePortArray ports(bool& isNull) const;
     MessagePortArray ports() const;
     MessagePortChannelArray* channels() const { return m_channels ? m_channels.get() : 0; }
 
-    virtual const AtomicString& interfaceName() const override;
+    const AtomicString& interfaceName() const override;
 
     enum DataType {
         DataTypeScriptValue,
         DataTypeSerializedScriptValue,
         DataTypeString,
         DataTypeBlob,
         DataTypeArrayBuffer
     };
     DataType dataType() const { return m_dataType; }
     ScriptValue dataAsScriptValue() const { ASSERT(m_dataType == DataTypeScriptValue); return m_dataAsScriptValue; }
     SerializedScriptValue* dataAsSerializedScriptValue() const { ASSERT(m_dataType == DataTypeSerializedScriptValue); return m_dataAsSerializedScriptValue.get(); }
     String dataAsString() const { ASSERT(m_dataType == DataTypeString); return m_dataAsString; }
     Blob* dataAsBlob() const { ASSERT(m_dataType == DataTypeBlob); return m_dataAsBlob.get(); }
     DOMArrayBuffer* dataAsArrayBuffer() const { ASSERT(m_dataType == DataTypeArrayBuffer); return m_dataAsArrayBuffer.get(); }
 
     void setSerializedData(PassRefPtr<SerializedScriptValue> data)
     {
         ASSERT(!m_dataAsSerializedScriptValue);
         m_dataAsSerializedScriptValue = data;
     }
 
     void entangleMessagePorts(ExecutionContext*);
 
     DECLARE_VIRTUAL_TRACE();
 
-    virtual v8::Local<v8::Object> associateWithWrapper(v8::Isolate*, const WrapperTypeInfo*, v8::Local<v8::Object> wrapper) override WARN_UNUSED_RETURN;
+    v8::Local<v8::Object> associateWithWrapper(v8::Isolate*, const WrapperTypeInfo*, v8::Local<v8::Object> wrapper) override WARN_UNUSED_RETURN;
 
 private:
     MessageEvent();
     MessageEvent(const AtomicString&, const MessageEventInit&);
     MessageEvent(const String& origin, const String& lastEventId, PassRefPtrWillBeRawPtr<EventTarget> source, MessagePortArray*);
     MessageEvent(PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, PassRefPtrWillBeRawPtr<EventTarget> source, MessagePortArray*);
     MessageEvent(PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, PassRefPtrWillBeRawPtr<EventTarget> source, PassOwnPtr<MessagePortChannelArray>);
 
     MessageEvent(const String& data, const String& origin);
     MessageEvent(Blob* data, const String& origin);
@@ skipping 11 matching lines @@
     // m_ports are the MessagePorts in an engtangled state, and m_channels are
     // the MessageChannels in a disentangled state. Only one of them can be
     // non-empty at a time. entangleMessagePorts() moves between the states.
     PersistentWillBeMember<MessagePortArray> m_ports;
     OwnPtr<MessagePortChannelArray> m_channels;
 };
 
 } // namespace blink
 
 #endif // MessageEvent_h