Update Event classes to use OVERRIDE / FINAL when needed

Source/core/events/SecurityPolicyViolationEvent.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 29 matching lines @@
     String blockedURI;
     String violatedDirective;
     String effectiveDirective;
     String originalPolicy;
     String sourceFile;
     int lineNumber;
     int columnNumber;
     int statusCode;
 };
 
-class SecurityPolicyViolationEvent : public Event {
+class SecurityPolicyViolationEvent FINAL : public Event {
 public:
     static PassRefPtr<SecurityPolicyViolationEvent> create()
     {
         return adoptRef(new SecurityPolicyViolationEvent());
     }
 
     static PassRefPtr<SecurityPolicyViolationEvent> create(const AtomicString& type, const SecurityPolicyViolationEventInit& initializer)
     {
         return adoptRef(new SecurityPolicyViolationEvent(type, initializer));
     }
 
     const String& documentURI() const { return m_documentURI; }
     const String& referrer() const { return m_referrer; }
     const String& blockedURI() const { return m_blockedURI; }
     const String& violatedDirective() const { return m_violatedDirective; }
     const String& effectiveDirective() const { return m_effectiveDirective; }
     const String& originalPolicy() const { return m_originalPolicy; }
     const String& sourceFile() const { return m_sourceFile; }
     int lineNumber() const { return m_lineNumber; }
     int columnNumber() const { return m_columnNumber; }
     int statusCode() const { return m_statusCode; }
 
-    virtual const AtomicString& interfaceName() const { return EventNames::SecurityPolicyViolationEvent; }
+    virtual const AtomicString& interfaceName() const OVERRIDE { return EventNames::SecurityPolicyViolationEvent; }
 
 private:
     SecurityPolicyViolationEvent()
     {
         ScriptWrappable::init(this);
     }
 
     SecurityPolicyViolationEvent(const AtomicString& type, const SecurityPolicyViolationEventInit& initializer)
         : Event(type, initializer)
         , m_documentURI(initializer.documentURI)
@@ skipping 18 matching lines @@
     String m_originalPolicy;
     String m_sourceFile;
     int m_lineNumber;
     int m_columnNumber;
     int m_statusCode;
 };
 
 } // namespace WebCore
 
 #endif // SecurityPolicyViolationEvent_h