Added processing for a lost status to UpdateEngineClient.

chromeos/dbus/update_engine_client.h

 // 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.
 
 #ifndef CHROMEOS_DBUS_UPDATE_ENGINE_CLIENT_H_
 #define CHROMEOS_DBUS_UPDATE_ENGINE_CLIENT_H_
 
 #include "base/callback.h"
 #include "base/observer_list.h"
 #include "chromeos/chromeos_export.h"
@@ skipping 16 matching lines @@
   // Any state can transition to REPORTING_ERROR_EVENT and then on to IDLE.
   enum UpdateStatusOperation {
     UPDATE_STATUS_ERROR = -1,
     UPDATE_STATUS_IDLE = 0,
     UPDATE_STATUS_CHECKING_FOR_UPDATE,
     UPDATE_STATUS_UPDATE_AVAILABLE,
     UPDATE_STATUS_DOWNLOADING,
     UPDATE_STATUS_VERIFYING,
     UPDATE_STATUS_FINALIZING,
     UPDATE_STATUS_UPDATED_NEED_REBOOT,
-    UPDATE_STATUS_REPORTING_ERROR_EVENT
+    UPDATE_STATUS_REPORTING_ERROR_EVENT,
+    UPDATE_STATUS_ATTEMPTING_ROLLBACK
   };
 
   // The status of the ongoing update attempt.
   struct Status {
     Status() : status(UPDATE_STATUS_IDLE),
                download_progress(0.0),
                last_checked_time(0),
                new_size(0) {
     }
 
@@ skipping 89 matching lines @@
   // Create() should be used instead.
   UpdateEngineClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(UpdateEngineClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_UPDATE_ENGINE_CLIENT_H_