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<?xml version="1.0"?>
                 type="text/css"?>
<!--
-->
  onload="start();">
  <!-- test code goes here -->
  <script type="application/javascript"><![CDATA[
    /* global messageManager, sendAsyncMessage, getGroupMessageManager */
    var FRAME_SCRIPT = "data:,sendAsyncMessage('test')";
    var order = ["group", "window", "global"];
    var globalMM = Cc["@mozilla.org/globalmessagemanager;1"].getService();
    function is(val, exp, msg) {
      window.arguments[0].is(val, exp, msg);
    }
    function promiseMessage(type, mm) {
      return new Promise(function (resolve) {
        mm.addMessageListener("test", function onMessage() {
          mm.removeMessageListener("test", onMessage);
          is(type, order.shift(), "correct type " + type);
          resolve();
        });
      });
    }
    /**
     * Tests that async messages sent by frame scripts bubble up as expected,
     * passing the group, window, and global message managers in that order.
     */
    function start() {
      var global = promiseMessage("global", globalMM);
      var window = promiseMessage("window", messageManager);
      var group = promiseMessage("group", getGroupMessageManager("test"));
      var browser = document.querySelector("browser");
      browser.messageManager.loadFrameScript(FRAME_SCRIPT, true);
      Promise.all([global, window, group]).then(function () {
        self.arguments[0].setTimeout(function() { this.next(); });
        self.close();
      });
    }
  ]]></script>
  <browser messagemanagergroup="test" type="content" src="about:mozilla" />
</window>