Add an ONC property for disabling LCP echo

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 314 matching lines @@
 ONC_EXPORT extern const char kEAP[];
 ONC_EXPORT extern const char kGroup[];
 ONC_EXPORT extern const char kIKEVersion[];
 ONC_EXPORT extern const char kPSK[];
 ONC_EXPORT extern const char kServerCAPEMs[];
 ONC_EXPORT extern const char kServerCARef[];
 ONC_EXPORT extern const char kServerCARefs[];
 ONC_EXPORT extern const char kXAUTH[];
 }  // namespace ipsec
 
+namespace l2tp {
+ONC_EXPORT extern const char kLcpEchoDisabled[];
+}  // namespace l2tp
+
 namespace openvpn {
 ONC_EXPORT extern const char kAuthNoCache[];
 ONC_EXPORT extern const char kAuthRetry[];
 ONC_EXPORT extern const char kAuth[];
 ONC_EXPORT extern const char kCipher[];
 ONC_EXPORT extern const char kCompLZO[];
 ONC_EXPORT extern const char kCompNoAdapt[];
 ONC_EXPORT extern const char kIgnoreDefaultRoute[];
 ONC_EXPORT extern const char kInteract[];
 ONC_EXPORT extern const char kKeyDirection[];
@@ skipping 68 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_