The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 #include "nsISupports.idl"

 /* This interface provides supplemental information

    to that which is provided by the network info definition. It is

    reasonable to expect it to grow.

 */

 [scriptable, builtinclass, uuid(0af94dec-7ffc-4301-8937-766c214ac688)]

 interface nsINetworkProperties : nsISupports

 {

     readonly attribute boolean isWifi;

     readonly attribute unsigned long dhcpGateway;

 };