[cros] Make sure that update screen will be skipped when shortcut is pressed.

chrome/browser/chromeos/login/update_screen.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_LOGIN_UPDATE_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_UPDATE_SCREEN_H_
 #pragma once
 
 #include "base/timer.h"
 #include "chrome/browser/chromeos/cros/update_library.h"
@@ skipping 18 matching lines @@
   virtual ~UpdateScreen();
 
   // UpdateLibrary::Observer implementation:
   virtual void UpdateStatusChanged(UpdateLibrary* library);
 
   // Overridden from UpdateController:
   virtual void StartUpdate();
   virtual void CancelUpdate();
 
   // Reports update results to the ScreenObserver.
-  virtual void ExitUpdate();
+  // |forced| should be set to true when calling this method and update status
+  // is not one of UPDATE_STATUS_IDLE, UPDATE_STATUS_ERROR,
+  // UPDATE_STATUS_REPORTING_ERROR_EVENT.
+  virtual void ExitUpdate(bool forced);
 
   // Maximal curtain time get/set, in seconds.
   int maximal_curtain_time() const { return maximal_curtain_time_; }
   void SetMaximalCurtainTime(int seconds);
 
   // Reboot check delay get/set, in seconds.
   int reboot_check_delay() const { return reboot_check_delay_; }
   void SetRebootCheckDelay(int seconds);
 
   // Returns true if there is critical system update that requires installation
@@ skipping 33 matching lines @@
 
   // Is all updates critical? If true, update deadlines are ignored.
   bool is_all_updates_critical_;
 
   DISALLOW_COPY_AND_ASSIGN(UpdateScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UPDATE_SCREEN_H_