Update fetch / loader classes to use OVERRIDE / FINAL when needed

Source/core/fetch/ScriptResource.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
@@ skipping 15 matching lines @@
 #ifndef ScriptResource_h
 #define ScriptResource_h
 
 #include "core/fetch/ResourcePtr.h"
 
 namespace WebCore {
 
 class ResourceFetcher;
 class TextResourceDecoder;
 
-class ScriptResource : public Resource {
+class ScriptResource FINAL : public Resource {
 public:
     typedef ResourceClient ClientType;
 
     ScriptResource(const ResourceRequest&, const String& charset);
     virtual ~ScriptResource();
 
     const String& script();
 
-    virtual void setEncoding(const String&);
-    virtual String encoding() const;
+    virtual void setEncoding(const String&) OVERRIDE;
+    virtual String encoding() const OVERRIDE;
     AtomicString mimeType() const;
 
     bool mimeTypeAllowedByNosniff() const;
 
 private:
     AtomicString m_script;
     OwnPtr<TextResourceDecoder> m_decoder;
 };
 
 DEFINE_RESOURCE_TYPE_CASTS(Script);
 
 }
 
 #endif