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/.

  */

 const { Cc, Ci, Cu } = require("chrome");

 const { SimulatorProcess } = require("./simulator-process");

 const { Promise: promise } = Cu.import("resource://gre/modules/Promise.jsm", {});

 const Self = require("sdk/self");

 const System = require("sdk/system");

 const { Simulator } = Cu.import("resource://gre/modules/devtools/Simulator.jsm");

 let process;

 function launch({ port }) {

   // Close already opened simulation

   if (process) {

     return close().then(launch.bind(null, { port: port }));

   }

   process = SimulatorProcess();

   process.remoteDebuggerPort = port;

   process.run();

   return promise.resolve();

 }

 function close() {

   if (!process) {

     return promise.resolve();

   }

   let p = process;

   process = null;

   return p.kill();

 }

 // Load data generated at build time that

 // expose various information about the runtime we ship

 let appinfo = System.staticArgs;

 Simulator.register(appinfo.label, {

   appinfo: appinfo,

   launch: launch,

   close: close

 });

 require("sdk/system/unload").when(function () {

   Simulator.unregister(appinfo.label);

   close();

 });