replace OVERRIDE and FINAL with override and final in chrome/browser/[r-z]*

chrome/browser/signin/signin_error_notifier_ash.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 CHROME_BROWSER_SIGNIN_SIGNIN_ERROR_NOTIFIER_ASH_H_
 #define CHROME_BROWSER_SIGNIN_SIGNIN_ERROR_NOTIFIER_ASH_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/strings/string16.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/signin/core/browser/signin_error_controller.h"
 
 class Profile;
 
 // Shows signin-related errors as notifications in Ash.
 class SigninErrorNotifier : public SigninErrorController::Observer,
                             public KeyedService {
  public:
   SigninErrorNotifier(SigninErrorController* controller, Profile* profile);
   virtual ~SigninErrorNotifier();
 
   // KeyedService:
-  virtual void Shutdown() OVERRIDE;
+  virtual void Shutdown() override;
 
   // SigninErrorController::Observer:
-  virtual void OnErrorChanged() OVERRIDE;
+  virtual void OnErrorChanged() override;
 
  private:
   base::string16 GetMessageBody() const;
 
   // The error controller to query for error details.
   SigninErrorController* error_controller_;
 
   // The Profile this service belongs to.
   Profile* profile_;
 
   // Used to keep track of the message center notification.
   std::string notification_id_;
 
   DISALLOW_COPY_AND_ASSIGN(SigninErrorNotifier);
 };
 
 #endif  // CHROME_BROWSER_SIGNIN_SIGNIN_ERROR_NOTIFIER_ASH_H_