gecko-dev/b2g/chrome/content/shell.xul

<?xml version="1.0"?>

<!-- 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/.  -->

<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
        id="shell"
        windowtype="navigator:browser"
#ifdef ANDROID
        sizemode="fullscreen"
#endif
        style="background: black; overflow: hidden; width:320px; height:480px"
        onunload="shell.stop();">

  <script type="application/javascript" src="chrome://browser/content/settings.js"/>
  <script type="application/javascript" src="chrome://browser/content/shell.js"/>

#ifndef MOZ_WIDGET_GONK
  <!-- this script handles the screen argument for desktop builds -->
  <script type="application/javascript" src="chrome://browser/content/screen.js"/>
  <!-- this script handles the "runapp" argument for desktop builds -->
  <script type="application/javascript" src="chrome://browser/content/runapp.js"/>
#endif
  <!-- The html:iframe containing the UI is created here. -->
</window>