Add device disabling to OOBE flow

chrome/browser/chromeos/policy/server_backed_device_state.cc

 // Copyright (c) 2014 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/policy/server_backed_device_state.h"
 
 namespace policy {
 
 const char kDeviceStateManagementDomain[] = "management_domain";
 const char kDeviceStateRestoreMode[] = "device_mode";
+const char kDeviceStateDisabled[] = "disabled";
+const char kDeviceStateDisabledMessage[] = "disabled_message";
 
 const char kDeviceStateRestoreModeReEnrollmentRequested[] =
     "re-enrollment-requested";
 const char kDeviceStateRestoreModeReEnrollmentEnforced[] =
     "re-enrollment-enforced";
 
 }  // namespace policy