Add an ONC property for the third-party VPN provider extension ID

components/onc/onc_constants.h

 // 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.
 #ifndef COMPONENTS_ONC_ONC_CONSTANTS_H_
 #define COMPONENTS_ONC_ONC_CONSTANTS_H_
 
 #include <string>
 
 #include "components/onc/onc_export.h"
 
@@ skipping 349 matching lines @@
 ONC_EXPORT extern const char kVerifyX509[];
 }  // namespace openvpn
 
 namespace openvpn_user_auth_type {
 ONC_EXPORT extern const char kNone[];
 ONC_EXPORT extern const char kOTP[];
 ONC_EXPORT extern const char kPassword[];
 ONC_EXPORT extern const char kPasswordAndOTP[];
 }  // openvpn_user_auth_type
 
+namespace third_party_vpn {
+ONC_EXPORT extern const char kExtensionID[];
+}  // third_party_vpn
+
 namespace verify_x509 {
 ONC_EXPORT extern const char kName[];
 ONC_EXPORT extern const char kType[];
 
 namespace types {
 ONC_EXPORT extern const char kName[];
 ONC_EXPORT extern const char kNamePrefix[];
 ONC_EXPORT extern const char kSubject[];
 }  // namespace types
 }  // namespace verify_x509
@@ skipping 18 matching lines @@
 ONC_EXPORT extern const char kWPAD[];
 }  // namespace proxy
 
 namespace global_network_config {
 ONC_EXPORT extern const char kAllowOnlyPolicyNetworksToAutoconnect[];
 }  // global_network_config
 
 }  // namespace onc
 
 #endif  // COMPONENTS_ONC_ONC_CONSTANTS_H_