chromeos: Remove "error_libcros_missing" error from file browser private API

chrome/browser/resources/file_manager/js/volume_manager.js

 // 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.
 
 /**
  * VolumeManager is responsible for tracking list of mounted volumes.
  *
  * @constructor
  * @extends {cr.EventTarget}
  */
@@ skipping 30 matching lines @@
   /* Internal errors */
   NOT_MOUNTED: 'not_mounted',
   TIMEOUT: 'timeout',
 
   /* System events */
   UNKNOWN: 'error_unknown',
   INTERNAL: 'error_internal',
   UNKNOWN_FILESYSTEM: 'error_unknown_filesystem',
   UNSUPPORTED_FILESYSTEM: 'error_unsupported_filesystem',
   INVALID_ARCHIVE: 'error_invalid_archive',
-  LIBCROS_MISSING: 'error_libcros_missing',
   AUTHENTICATION: 'error_authentication',
   PATH_UNMOUNTED: 'error_path_unmounted'
 };
 
 /**
  * @enum
  */
 VolumeManager.GDataStatus = {
   UNMOUNTED: 'unmounted',
   MOUNTING: 'mounting',
@@ skipping 386 matching lines @@
 };
 
 /**
  * @param {string} mountPath Mount path.
  * @private
  */
 VolumeManager.prototype.validateMountPath_ = function(mountPath) {
   if (!/^\/(((archive|removable)\/[^\/]+)|drive|Downloads)$/.test(mountPath))
     throw new Error('Invalid mount path: ', mountPath);
 };