ChromeOS: Add SystemTimezoneAutomaticDetection policy.

chrome/browser/chromeos/policy/proto/chrome_device_policy.proto

 // Copyright 2013 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 669 matching lines @@
 // The list is used by the permission_broker daemon.
 message UsbDetachableWhitelistProto {
   repeated UsbDeviceIdProto id = 1;
 }
 
 message AllowBluetoothProto {
   // Policy which controls whether Bluetooth is available.
   optional bool allow_bluetooth = 1 [default = true];
 }
 
+message SystemTimezoneAutomaticDetectionProto {
+  // This allows domain administrators to control the timezone settings for
+  // their devices.
+  enum AutomaticTimezoneDetectionType {
+    AUTOMATIC_TIMEZONE_DETECTION_USERS_DECIDE = 0;
+    AUTOMATIC_TIMEZONE_DETECTION_DISABLED = 1;
+    AUTOMATIC_TIMEZONE_DETECTION_IP_ONLY = 2;
+    AUTOMATIC_TIMEZONE_DETECTION_SEND_WIFI_ACCESS_POINTS = 3;
+  };
+
+  optional AutomaticTimezoneDetectionType timezone_detection_type = 1;
+}
+
 message ChromeDeviceSettingsProto {
   optional DevicePolicyRefreshRateProto device_policy_refresh_rate = 1;
   optional UserWhitelistProto user_whitelist = 2;
   optional GuestModeEnabledProto guest_mode_enabled = 3;
   optional OBSOLETE_DeviceProxySettingsProto device_proxy_settings = 4
       [deprecated = true];
   optional CameraEnabledProto camera_enabled = 5;
   optional ShowUserNamesOnSigninProto show_user_names = 6;
   optional DataRoamingEnabledProto data_roaming_enabled = 7;
   optional AllowNewUsersProto allow_new_users = 8;
@@ skipping 29 matching lines @@
   optional ExtensionCacheSizeProto extension_cache_size = 36;
   optional LoginScreenDomainAutoCompleteProto
       login_screen_domain_auto_complete = 37;
   optional DeviceLogUploadSettingsProto device_log_upload_settings = 38;
   optional DisplayRotationDefaultProto display_rotation_default = 39;
   optional AllowKioskAppControlChromeVersionProto
       allow_kiosk_app_control_chrome_version = 40;
   optional LoginAuthenticationBehaviorProto login_authentication_behavior = 41;
   optional UsbDetachableWhitelistProto usb_detachable_whitelist = 42;
   optional AllowBluetoothProto allow_bluetooth = 43;
+  optional SystemTimezoneAutomaticDetectionProto
+      system_timezone_automatic_detection = 44;
 }