Add OVERRIDE to chrome/browser/chromeos/.

chrome/browser/chromeos/sms_observer.h

 // Copyright (c) 2011 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 CHROME_BROWSER_CHROMEOS_SMS_OBSERVER_H_
 #define CHROME_BROWSER_CHROMEOS_SMS_OBSERVER_H_
 #pragma once
 
 #include <map>
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/compiler_specific.h"
 #include "chrome/browser/chromeos/cros/network_library.h"
 
 class Profile;
 
 namespace chromeos {
 
 struct SMS;
 class SMSHandler;
 
 // Performs monitoring of incoming SMS and shows system notifications.
 class SmsObserver : public NetworkLibrary::NetworkManagerObserver {
  public:
   explicit SmsObserver(Profile* profile);
   virtual ~SmsObserver();
 
  private:
   typedef std::map<std::string, SMSHandler*> ObserversMap;
 
   // NetworkLibrary:NetworkManagerObserver implementation:
-  virtual void OnNetworkManagerChanged(NetworkLibrary* obj);
+  virtual void OnNetworkManagerChanged(NetworkLibrary* obj) OVERRIDE;
 
   static void StaticCallback(void* object,
                              const char* modem_device_path,
                              const SMS* message);
 
   void OnNewMessage(const char* modem_device_path, const SMS* message);
 
   void UpdateObservers(NetworkLibrary* library);
   void DisconnectAll();
 
   Profile* profile_;
   ObserversMap observers_;
 
   DISALLOW_COPY_AND_ASSIGN(SmsObserver);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_SMS_OBSERVER_H_