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

Source/core/loader/LinkLoader.h

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 28 matching lines @@
 #include "platform/Timer.h"
 #include "wtf/OwnPtr.h"
 
 namespace WebCore {
 
 class Document;
 class LinkRelAttribute;
 class PrerenderHandle;
 
 // The LinkLoader can load link rel types icon, dns-prefetch, subresource, prefetch and prerender.
-class LinkLoader : public ResourceOwner<Resource, ResourceClient>, public PrerenderClient {
+class LinkLoader FINAL : public ResourceOwner<Resource, ResourceClient>, public PrerenderClient {
 
 public:
     explicit LinkLoader(LinkLoaderClient*);
     virtual ~LinkLoader();
 
     // from ResourceClient
-    virtual void notifyFinished(Resource*);
+    virtual void notifyFinished(Resource*) OVERRIDE;
 
     // from PrerenderClient
     virtual void didStartPrerender() OVERRIDE;
     virtual void didStopPrerender() OVERRIDE;
     virtual void didSendLoadForPrerender() OVERRIDE;
     virtual void didSendDOMContentLoadedForPrerender() OVERRIDE;
 
     void released();
     bool loadLink(const LinkRelAttribute&, const String& type, const KURL&, Document&);
 
 private:
     void linkLoadTimerFired(Timer<LinkLoader>*);
     void linkLoadingErrorTimerFired(Timer<LinkLoader>*);
 
     LinkLoaderClient* m_client;
 
     Timer<LinkLoader> m_linkLoadTimer;
     Timer<LinkLoader> m_linkLoadingErrorTimer;
 
     OwnPtr<PrerenderHandle> m_prerender;
 };
 
 }
 
 #endif