Add support to Google Update wrappers for the "automatic updates only" group policy setting.

chrome/installer/util/google_update_settings.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/installer/util/google_update_settings.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/path_service.h"
@@ skipping 129 matching lines @@
 // Populates |update_policy| with the UpdatePolicy enum value corresponding to a
 // DWORD read from the registry and returns true if |value| is within range.
 // If |value| is out of range, returns false without modifying |update_policy|.
 bool GetUpdatePolicyFromDword(
     const DWORD value,
     GoogleUpdateSettings::UpdatePolicy* update_policy) {
   switch (value) {
     case GoogleUpdateSettings::UPDATES_DISABLED:
     case GoogleUpdateSettings::AUTOMATIC_UPDATES:
     case GoogleUpdateSettings::MANUAL_UPDATES_ONLY:
+    case GoogleUpdateSettings::AUTO_UPDATES_ONLY:
       *update_policy = static_cast<GoogleUpdateSettings::UpdatePolicy>(value);
       return true;
     default:
       LOG(WARNING) << "Unexpected update policy override value: " << value;
   }
   return false;
 }
 
 }  // namespace
 
@@ skipping 541 matching lines @@
   }
 
   // If the key or value was not present, return the empty string.
   if (result == ERROR_FILE_NOT_FOUND || result == ERROR_PATH_NOT_FOUND) {
     experiment_labels->clear();
     return true;
   }
 
   return result == ERROR_SUCCESS;
 }