diff -r 000000000000 -r 6474c204b198 dom/mobileconnection/tests/marionette/mobile_header.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/mobileconnection/tests/marionette/mobile_header.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,60 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+SpecialPowers.addPermission("mobileconnection", true, document);
+
+// In single sim scenario, there is only one mobileConnection, we can always use
+// the first instance.
+let mobileConnection = window.navigator.mozMobileConnections[0];
+ok(mobileConnection instanceof MozMobileConnection,
+   "mobileConnection is instanceof " + mobileConnection.constructor);
+
+let _pendingEmulatorCmdCount = 0;
+
+/* Remove permission and execute finish() */
+let cleanUp = function() {
+  waitFor(function() {
+    SpecialPowers.removePermission("mobileconnection", document);
+    finish();
+  }, function() {
+    return _pendingEmulatorCmdCount === 0;
+  });
+};
+
+/* Helper for tasks */
+let taskHelper = {
+  tasks: [],
+
+  push: function(task) {
+    this.tasks.push(task);
+  },
+
+  runNext: function() {
+    let task = this.tasks.shift();
+    if (!task) {
+      cleanUp();
+      return;
+    }
+
+    if (typeof task === "function") {
+      task();
+    }
+  },
+};
+
+/* Helper for emulator console command */
+let emulatorHelper = {
+  sendCommand: function(cmd, callback) {
+    _pendingEmulatorCmdCount++;
+    runEmulatorCmd(cmd, function(results) {
+      _pendingEmulatorCmdCount--;
+
+      let result = results[results.length - 1];
+      is(result, "OK", "'"+ cmd +"' returns '" + result + "'");
+
+      if (callback && typeof callback === "function") {
+        callback(results);
+      }
+    });
+  },
+};