Make update over cellular an option for user

chrome/browser/chromeos/login/screens/update_screen.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/chromeos/login/screens/update_screen.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
@@ skipping 179 matching lines @@
       UpdateEngineClient* update_engine_client =
           DBusThreadManager::Get()->GetUpdateEngineClient();
       switch (update_engine_client->GetLastStatus().status) {
         case UpdateEngineClient::UPDATE_STATUS_ATTEMPTING_ROLLBACK:
           break;
         case UpdateEngineClient::UPDATE_STATUS_UPDATE_AVAILABLE:
         case UpdateEngineClient::UPDATE_STATUS_UPDATED_NEED_REBOOT:
         case UpdateEngineClient::UPDATE_STATUS_DOWNLOADING:
         case UpdateEngineClient::UPDATE_STATUS_FINALIZING:
         case UpdateEngineClient::UPDATE_STATUS_VERIFYING:
+        case UpdateEngineClient::UPDATE_STATUS_NEED_PERMISSION_TO_UPDATE:
           DCHECK(!HasCriticalUpdate());
         // Noncritical update, just exit screen as if there is no update.
         // no break
         case UpdateEngineClient::UPDATE_STATUS_IDLE:
           Finish(ScreenExitCode::UPDATE_NOUPDATE);
           break;
         case UpdateEngineClient::UPDATE_STATUS_ERROR:
         case UpdateEngineClient::UPDATE_STATUS_REPORTING_ERROR_EVENT:
           if (is_checking_for_update_) {
             Finish(ScreenExitCode::UPDATE_ERROR_CHECKING_FOR_UPDATE);
@@ skipping 113 matching lines @@
       VLOG(1) << "Attempting rollback";
       break;
     case UpdateEngineClient::UPDATE_STATUS_IDLE:
       if (ignore_idle_status_) {
         // It is first IDLE status that is sent before we initiated the check.
         break;
       }
       // else no break
     case UpdateEngineClient::UPDATE_STATUS_ERROR:
     case UpdateEngineClient::UPDATE_STATUS_REPORTING_ERROR_EVENT:
+    case UpdateEngineClient::UPDATE_STATUS_NEED_PERMISSION_TO_UPDATE:
       ExitUpdate(REASON_UPDATE_ENDED);
       break;
     default:
       NOTREACHED();
       break;
   }
 }
 
 void UpdateScreen::OnPortalDetectionCompleted(
     const NetworkState* network,
@@ skipping 278 matching lines @@
 }
 
 void UpdateScreen::OnConnectRequested() {
   if (state_ == State::STATE_ERROR) {
     LOG(WARNING) << "Hiding error message since AP was reselected";
     StartUpdateCheck();
   }
 }
 
 }  // namespace chromeos