Add device policy definition for local accounts.

chrome/browser/policy/proto/chrome_device_policy.proto

 // 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.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
 package enterprise_management;
 
@@ skipping 202 matching lines @@
   // that are equivalent to one of the timezones in "timezone_settings.cc" are
   // valid. In case of an invalid value (e.g. the empty string), the setting is
   // still activated with a fallback timezone (currently "GMT").
   // Only if no value is provided, the timezone device setting is inactive. In
   // that case, the currently active timezone will remain in use however users
   // can change the timezone and the change is persistent. Thus a change by one
   // user affects the login-screen and all other users.
   optional string timezone = 1;
 }
 
+// Describes a single device-local account.
+message DeviceLocalAccountInfoProto {
+  // Identifier for the device-local account. Account identifiers loosely follow
+  // the conventions for email addresses as specified by RFC 5322, e.g. local
+  // (user name) and domain parts, separated by the '@' character.
+  // Policy-configured device-local accounts are on the same domain that the
+  // device is enrolled to. In contrast to RFC 5322 (which is more restrictive),
+  // the local part may contain any characters other than '@'.
+  optional string id = 1;
+}
+
+message DeviceLocalAccountsProto {
+  // The list of device-local accounts (i.e. accounts without an associated
+  // cloud-backed profile) that are available on the device.
+  repeated DeviceLocalAccountInfoProto account = 1;
+}
+
 message ChromeDeviceSettingsProto {
   optional DevicePolicyRefreshRateProto device_policy_refresh_rate = 1;
   optional UserWhitelistProto user_whitelist = 2;
   optional GuestModeEnabledProto guest_mode_enabled = 3;
   optional DeviceProxySettingsProto device_proxy_settings = 4;
   optional CameraEnabledProto camera_enabled = 5;
   optional ShowUserNamesOnSigninProto show_user_names = 6;
   optional DataRoamingEnabledProto data_roaming_enabled = 7;
   optional AllowNewUsersProto allow_new_users = 8;
   optional MetricsEnabledProto metrics_enabled = 9;
   optional ReleaseChannelProto release_channel = 10;
   optional DeviceOpenNetworkConfigurationProto open_network_configuration = 11;
   optional DeviceReportingProto device_reporting = 12;
   optional EphemeralUsersEnabledProto ephemeral_users_enabled = 13;
   optional AppPackProto app_pack = 14;
   optional ForcedLogoutTimeoutsProto forced_logout_timeouts = 15;
   optional ScreenSaverProto login_screen_saver = 16;
   optional AutoUpdateSettingsProto auto_update_settings = 17;
   optional StartUpUrlsProto start_up_urls = 18;
   optional PinnedAppsProto pinned_apps = 19;
   optional SystemTimezoneProto system_timezone = 20;
+  optional DeviceLocalAccountsProto device_local_accounts = 21;
 }