AU: Send a previous version event after reboot following an update.

omaha_request_action.h

 // Copyright (c) 2010 The Chromium OS 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_PLATFORM_UPDATE_ENGINE_OMAHA_REQUEST_ACTION_H__
 #define CHROMEOS_PLATFORM_UPDATE_ENGINE_OMAHA_REQUEST_ACTION_H__
 
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <fcntl.h>
@@ skipping 52 matching lines @@
     kTypeDownloadComplete = 1,
     kTypeInstallComplete = 2,
     kTypeUpdateComplete = 3,
     kTypeUpdateDownloadStarted = 13,
     kTypeUpdateDownloadFinished = 14,
   };
 
   enum Result {
     kResultError = 0,
     kResultSuccess = 1,
+    kResultSuccessReboot = 2,
   };
 
   OmahaEvent()
       : type(kTypeUnknown),
         result(kResultError),
         error_code(kActionCodeError) {}
   explicit OmahaEvent(Type in_type)
       : type(in_type),
         result(kResultSuccess),
         error_code(kActionCodeSuccess) {}
@@ skipping 96 matching lines @@
   // are sent to Omaha.
   int ping_active_days_;
   int ping_roll_call_days_;
 
   DISALLOW_COPY_AND_ASSIGN(OmahaRequestAction);
 };
 
 }  // namespace chromeos_update_engine
 
 #endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_OMAHA_REQUEST_ACTION_H__