Update web classes to use OVERRIDE / FINAL when needed

Source/web/IDBFactoryBackendProxy.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:
  *
  * 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
@@ skipping 20 matching lines @@
 
 #include "modules/indexeddb/chromium/IDBFactoryBackendInterfaceChromium.h"
 
 namespace WebCore {
 class ExecutionContext;
 }
 
 namespace blink {
 
 // FIXME: This is just a permission client at this point. Rename/refactor.
-class IDBFactoryBackendProxy : public WebCore::IDBFactoryBackendInterface {
+class IDBFactoryBackendProxy FINAL : public WebCore::IDBFactoryBackendInterface {
 public:
     static PassRefPtr<WebCore::IDBFactoryBackendInterface> create();
     virtual ~IDBFactoryBackendProxy() { }
 
-    virtual bool allowIndexedDB(WebCore::ExecutionContext*, const String& name);
+    virtual bool allowIndexedDB(WebCore::ExecutionContext*, const String& name) OVERRIDE;
 
 private:
     IDBFactoryBackendProxy() { }
 };
 
 } // namespace blink
 
 #endif // IDBFactoryBackendProxy_h