Only showing notification when a restart is needed. Partial fix to 5168.

chrome/browser/chromeos/update_observer.h

 // Copyright (c) 2010 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_UPDATE_OBSERVER_H_
 #define CHROME_BROWSER_CHROMEOS_UPDATE_OBSERVER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/time.h"
 #include "chrome/browser/chromeos/cros/update_library.h"
 #include "chrome/browser/chromeos/notifications/system_notification.h"
 
 class Profile;
 
 namespace chromeos {
 
 // The update observer displays a system notification when the an update is
 // available.
 
 class UpdateObserver : public UpdateLibrary::Observer {
  public:
   explicit UpdateObserver(Profile* profile);
   virtual ~UpdateObserver();
 
  private:
   virtual void UpdateStatusChanged(UpdateLibrary* library);
 
   SystemNotification notification_;
-  int progress_;  // Last displayed remaining time in minutes
 
   DISALLOW_COPY_AND_ASSIGN(UpdateObserver);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_UPDATE_OBSERVER_H_