Update web classes to use OVERRIDE / FINAL when needed

Source/web/WorkerGlobalScopeProxyProviderImpl.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:
  *
  *     * 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 24 matching lines @@
 #include "wtf/Noncopyable.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
 class Worker;
 class WorkerGlobalScopeProxy;
 }
 
 namespace blink {
 
-class WorkerGlobalScopeProxyProviderImpl : public WebCore::WorkerGlobalScopeProxyProvider {
+class WorkerGlobalScopeProxyProviderImpl FINAL : public WebCore::WorkerGlobalScopeProxyProvider {
     WTF_MAKE_NONCOPYABLE(WorkerGlobalScopeProxyProviderImpl);
 public:
     static PassOwnPtr<WorkerGlobalScopeProxyProviderImpl> create()
     {
         return adoptPtr(new WorkerGlobalScopeProxyProviderImpl());
     }
 
     virtual ~WorkerGlobalScopeProxyProviderImpl() { }
     virtual WebCore::WorkerGlobalScopeProxy* createWorkerGlobalScopeProxy(WebCore::Worker*) OVERRIDE;
 
 private:
     WorkerGlobalScopeProxyProviderImpl() { }
 };
 
 } // namespace blink
 
 #endif // WorkerGlobalScopeProxyProviderImpl_h