replace OVERRIDE and FINAL with override and final in extensions/

extensions/renderer/default_dispatcher_delegate.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EXTENSIONS_RENDERER_DEFAULT_DISPATCHER_DELEGATE_H_
 #define EXTENSIONS_RENDERER_DEFAULT_DISPATCHER_DELEGATE_H_
 
 #include "extensions/renderer/dispatcher_delegate.h"
 
 namespace extensions {
 
 class DefaultDispatcherDelegate : public DispatcherDelegate {
  public:
   DefaultDispatcherDelegate();
   virtual ~DefaultDispatcherDelegate();
 
   // DispatcherDelegate implementation.
   virtual scoped_ptr<ScriptContext> CreateScriptContext(
       const v8::Handle<v8::Context>& v8_context,
       blink::WebFrame* frame,
       const Extension* extension,
       Feature::Context context_type,
       const Extension* effective_extension,
-      Feature::Context effective_context_type) OVERRIDE;
+      Feature::Context effective_context_type) override;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_DEFAULT_DISPATCHER_DELEGATE_H_