diff -r 000000000000 -r 6474c204b198 testing/mochitest/b2g_start_script.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testing/mochitest/b2g_start_script.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,136 @@
+/* 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/. */
+
+let outOfProcess = __marionetteParams[0]
+let mochitestUrl = __marionetteParams[1]
+let onDevice = __marionetteParams[2]
+let wifiSettings = __marionetteParams[3]
+let prefs = Components.classes["@mozilla.org/preferences-service;1"].
+                            getService(Components.interfaces.nsIPrefBranch)
+let settings = window.navigator.mozSettings;
+
+if (wifiSettings)
+  wifiSettings = JSON.parse(wifiSettings);
+
+const CHILD_SCRIPT = "chrome://specialpowers/content/specialpowers.js";
+const CHILD_SCRIPT_API = "chrome://specialpowers/content/specialpowersAPI.js";
+const CHILD_LOGGER_SCRIPT = "chrome://specialpowers/content/MozillaLogger.js";
+
+let homescreen = document.getElementById('systemapp');
+let container = homescreen.contentWindow.document.getElementById('test-container');
+
+function openWindow(aEvent) {
+  var popupIframe = aEvent.detail.frameElement;
+  popupIframe.setAttribute('style', 'position: absolute; left: 0; top: 0px; background: white;');
+
+  // This is to size the iframe to what is requested in the window.open call,
+  // e.g. window.open("", "", "width=600,height=600");
+  if (aEvent.detail.features.indexOf('width') != -1) {
+    let width = aEvent.detail.features.substr(aEvent.detail.features.indexOf('width')+6);
+    width = width.substr(0,width.indexOf(',') == -1 ? width.length : width.indexOf(','));
+    popupIframe.style.width = width + 'px';
+  }
+  if (aEvent.detail.features.indexOf('height') != -1) {
+    let height = aEvent.detail.features.substr(aEvent.detail.features.indexOf('height')+7);
+    height = height.substr(0, height.indexOf(',') == -1 ? height.length : height.indexOf(','));
+    popupIframe.style.height = height + 'px';
+  }
+
+  popupIframe.addEventListener('mozbrowserclose', function(e) {
+    container.parentNode.removeChild(popupIframe);
+    container.focus();
+  });
+
+  // yes, the popup can call window.open too!
+  popupIframe.addEventListener('mozbrowseropenwindow', openWindow);
+
+  popupIframe.addEventListener('mozbrowserloadstart', function(e) {
+    popupIframe.focus();
+    let mm = popupIframe.QueryInterface(Ci.nsIFrameLoaderOwner).frameLoader.messageManager;
+    mm.loadFrameScript(CHILD_LOGGER_SCRIPT, true);
+    mm.loadFrameScript(CHILD_SCRIPT_API, true);
+    mm.loadFrameScript(CHILD_SCRIPT, true);
+    mm.loadFrameScript('data:,attachSpecialPowersToWindow%28content%29%3B', true);
+  });
+
+  container.parentNode.appendChild(popupIframe);
+}
+container.addEventListener('mozbrowseropenwindow', openWindow);
+
+if (outOfProcess) {
+  let specialpowers = {};
+  let loader = Cc["@mozilla.org/moz/jssubscript-loader;1"].getService(Ci.mozIJSSubScriptLoader);
+  loader.loadSubScript("chrome://specialpowers/content/SpecialPowersObserver.js", specialpowers);
+  let specialPowersObserver = new specialpowers.SpecialPowersObserver();
+
+  let mm = container.QueryInterface(Ci.nsIFrameLoaderOwner).frameLoader.messageManager;
+  specialPowersObserver.init(mm);
+
+  mm.addMessageListener("SPPrefService", specialPowersObserver);
+  mm.addMessageListener("SPProcessCrashService", specialPowersObserver);
+  mm.addMessageListener("SPPingService", specialPowersObserver);
+  mm.addMessageListener("SpecialPowers.Quit", specialPowersObserver);
+  mm.addMessageListener("SpecialPowers.Focus", specialPowersObserver);
+  mm.addMessageListener("SPPermissionManager", specialPowersObserver);
+  mm.addMessageListener("SPLoadChromeScript", specialPowersObserver);
+  mm.addMessageListener("SPChromeScriptMessage", specialPowersObserver);
+
+  mm.loadFrameScript(CHILD_LOGGER_SCRIPT, true);
+  mm.loadFrameScript(CHILD_SCRIPT_API, true);
+  mm.loadFrameScript(CHILD_SCRIPT, true);
+  //Workaround for bug 848411, once that bug is fixed, the following line can be removed
+  mm.loadFrameScript('data:,addEventListener%28%22DOMWindowCreated%22%2C%20function%28e%29%20%7B%0A%20%20removeEventListener%28%22DOMWindowCreated%22%2C%20arguments.callee%2C%20false%29%3B%0A%20%20var%20window%20%3D%20e.target.defaultView%3B%0A%20%20window.wrappedJSObject.SpecialPowers.addPermission%28%22allowXULXBL%22%2C%20true%2C%20window.document%29%3B%0A%7D%0A%29%3B', true);
+
+  specialPowersObserver._isFrameScriptLoaded = true;
+}
+
+
+if (onDevice) {
+  var cpuLock = Cc["@mozilla.org/power/powermanagerservice;1"]
+                      .getService(Ci.nsIPowerManagerService)
+                      .newWakeLock("cpu");
+
+  let manager = navigator.mozWifiManager;
+  let con = manager.connection;
+  manager.setPowerSavingMode(false);
+
+  manager.onenabled = function () {
+    if(wifiSettings) {
+      var req = manager.getKnownNetworks();
+      req.onsuccess = function () {
+        var networks = req.result;
+        for (var i = 0; i < networks.length; ++i){
+          var network = networks[i];
+          if(network.ssid == wifiSettings.ssid) {
+            manager.forget(network);
+          }
+        }
+        manager.associate(wifiSettings);
+      };
+    }
+  };
+
+  manager.onstatuschange = function (event) {
+    prefs.setIntPref("network.proxy.type", 2);
+    if (event.status == 'connected') {
+      container.src = mochitestUrl;
+    }
+  };
+
+  if(wifiSettings) {
+    var req = settings.createLock().set({
+       'wifi.enabled': false,
+       'wifi.suspended': false
+     });
+
+    req.onsuccess = function () {
+      dump("----------------------enabling wifi------------------\n");
+      var req1 = settings.createLock().set({
+          'wifi.enabled': true,
+          'wifi.suspended': false});
+    };
+  }
+} else {
+  container.src = mochitestUrl;
+}