diff -r 000000000000 -r 6474c204b198 dom/browser-element/mochitest/browserElement_ForwardName.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/browser-element/mochitest/browserElement_ForwardName.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 781320 - Test that the name in <iframe mozbrowser name="foo"> is
+// forwarded down to remote mozbrowsers.
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  SpecialPowers.wrap(iframe).mozbrowser = true;
+  iframe.setAttribute('name', 'foo');
+
+  iframe.addEventListener("mozbrowseropenwindow", function(e) {
+    ok(false, 'Got mozbrowseropenwindow, but should not have.');
+  });
+
+  iframe.addEventListener('mozbrowserlocationchange', function(e) {
+    ok(true, "Got locationchange to " + e.detail);
+    if (e.detail.endsWith("ForwardName.html#finish")) {
+      SimpleTest.finish();
+    }
+  });
+
+  // The file sends us messages via alert() that start with "success:" or
+  // "failure:".
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    ok(e.detail.message.startsWith('success:'), e.detail.message);
+  });
+
+  document.body.appendChild(iframe);
+
+  // This file does window.open('file_browserElement_ForwardName.html#finish',
+  // 'foo');  That should open in the curent window, because the window should
+  // be named foo.
+  iframe.src = 'file_browserElement_ForwardName.html';
+}
+
+addEventListener('testready', runTest);