Update web classes to use OVERRIDE / FINAL when needed

Source/web/WebEmbeddedWorkerImpl.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 28 matching lines @@
 namespace WebCore {
 class WorkerScriptLoader;
 class WorkerThread;
 }
 
 namespace blink {
 
 class ServiceWorkerGlobalScopeProxy;
 class WebView;
 
-class WebEmbeddedWorkerImpl :
+class WebEmbeddedWorkerImpl FINAL :
     public WebEmbeddedWorker,
     public WebFrameClient {
     WTF_MAKE_NONCOPYABLE(WebEmbeddedWorkerImpl);
 public:
     WebEmbeddedWorkerImpl(
         PassOwnPtr<WebServiceWorkerContextClient>,
         PassOwnPtr<WebWorkerPermissionClientProxy>);
     virtual ~WebEmbeddedWorkerImpl();
 
     // WebEmbeddedWorker overrides.
@@ skipping 31 matching lines @@
     // are guaranteed to exist while this object is around.
     WebView* m_webView;
     WebFrame* m_mainFrame;
 
     bool m_askedToTerminate;
 };
 
 } // namespace blink
 
 #endif // WebEmbeddedWorkerImpl_h