diff --git a/dom/browser-element/mochitest/Makefile.in b/dom/browser-element/mochitest/Makefile.in
index f215be686c10..951a1eec3666 100644
--- a/dom/browser-element/mochitest/Makefile.in
+++ b/dom/browser-element/mochitest/Makefile.in
@@ -88,10 +88,6 @@ MOCHITEST_FILES = \
 		browserElement_OpenWindowDifferentOrigin.js \
 		test_browserElement_inproc_OpenWindowDifferentOrigin.html \
 		file_browserElement_OpenWindowDifferentOrigin.html \
-		browserElement_OpenNamed.js \
-		test_browserElement_inproc_OpenNamed.html \
-		file_browserElement_OpenNamed.html \
-		file_browserElement_OpenNamed2.html \
 		browserElement_SecurityChange.js \
 		test_browserElement_inproc_SecurityChange.html \
 		file_browserElement_SecurityChange.html \
@@ -143,7 +139,6 @@ MOCHITEST_FILES += \
 		test_browserElement_oop_OpenWindowInFrame.html \
 		test_browserElement_oop_OpenWindowRejected.html \
 		test_browserElement_oop_OpenWindowDifferentOrigin.html \
-		test_browserElement_oop_OpenNamed.html \
 		test_browserElement_oop_SecurityChange.html \
 		test_browserElement_oop_BackForward.html \
 		test_browserElement_oop_Reload.html \
diff --git a/dom/browser-element/mochitest/browserElement_OpenNamed.js b/dom/browser-element/mochitest/browserElement_OpenNamed.js
deleted file mode 100644
index 171958d2a445..000000000000
--- a/dom/browser-element/mochitest/browserElement_OpenNamed.js
+++ /dev/null
@@ -1,57 +0,0 @@
-/* Any copyright is dedicated to the public domain.
-   http://creativecommons.org/publicdomain/zero/1.0/ */
-
-// Bug 742944 - In <iframe mozbrowser>, test that if we call window.open twice
-// with the same name, we get only one mozbrowseropenwindow event.
-
-"use strict";
-SimpleTest.waitForExplicitFinish();
-
-var iframe;
-var popupFrame;
-function runTest() {
-  browserElementTestHelpers.setEnabledPref(true);
-  browserElementTestHelpers.addToWhitelist();
-
-  iframe = document.createElement('iframe');
-  iframe.mozbrowser = true;
-
-  var gotPopup = false;
-  iframe.addEventListener('mozbrowseropenwindow', function(e) {
-    is(gotPopup, false, 'Should get just one popup.');
-    gotPopup = true;
-    popupFrame = e.detail.frameElement;
-
-    // Called when file_browserElement_OpenNamed2.html loads into popupFrame.
-    popupFrame.addEventListener('mozbrowsershowmodalprompt', function promptlistener(e) {
-      popupFrame.removeEventListener('mozbrowsershowmodalprompt', promptlistener);
-
-      ok(gotPopup, 'Got openwindow event before showmodalprompt event.');
-      is(e.detail.message, 'success: loaded');
-      SimpleTest.executeSoon(test2);
-    });
-
-    document.body.appendChild(popupFrame);
-  });
-
-  // OpenNamed.html will call
-  //
-  //    window.open('file_browserElement_OpenNamed2.html', 'OpenNamed').
-  //
-  // Once that popup loads, we reload OpenNamed.html.  That will call
-  // window.open again, but we shouldn't get another openwindow event, because
-  // we're opening into the same named window.
-  iframe.src = 'file_browserElement_OpenNamed.html';
-  document.body.appendChild(iframe);
-}
-
-function test2() {
-  popupFrame.addEventListener('mozbrowsershowmodalprompt', function(e) {
-    is(e.detail.message, 'success: loaded');
-    SimpleTest.finish();
-  });
-
-  iframe.src = 'file_browserElement_OpenNamed.html?test2';
-}
-
-runTest();
diff --git a/dom/browser-element/mochitest/file_browserElement_OpenNamed.html b/dom/browser-element/mochitest/file_browserElement_OpenNamed.html
deleted file mode 100644
index 7d2a7661c21f..000000000000
--- a/dom/browser-element/mochitest/file_browserElement_OpenNamed.html
+++ /dev/null
@@ -1,7 +0,0 @@
-<html>
-<body>
-<script>
-window.open('file_browserElement_OpenNamed2.html', 'OpenNamed');
-</script>
-</body>
-</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_OpenNamed2.html b/dom/browser-element/mochitest/file_browserElement_OpenNamed2.html
deleted file mode 100644
index 6bf37bb533ef..000000000000
--- a/dom/browser-element/mochitest/file_browserElement_OpenNamed2.html
+++ /dev/null
@@ -1,7 +0,0 @@
-<html>
-<body>
-<script>
-alert('success: loaded');
-</script>
-</body>
-</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_OpenNamed.html b/dom/browser-element/mochitest/test_browserElement_inproc_OpenNamed.html
deleted file mode 100644
index bbe12545c754..000000000000
--- a/dom/browser-element/mochitest/test_browserElement_inproc_OpenNamed.html
+++ /dev/null
@@ -1,13 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<head>
-  <title>Test of browser element.</title>
-  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
-  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
-  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
-</head>
-<body>
-<script type="application/javascript;version=1.7" src="browserElement_OpenNamed.js">
-</script>
-</body>
-</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_OpenNamed.html b/dom/browser-element/mochitest/test_browserElement_oop_OpenNamed.html
deleted file mode 100644
index bbe12545c754..000000000000
--- a/dom/browser-element/mochitest/test_browserElement_oop_OpenNamed.html
+++ /dev/null
@@ -1,13 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<head>
-  <title>Test of browser element.</title>
-  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
-  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
-  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
-</head>
-<body>
-<script type="application/javascript;version=1.7" src="browserElement_OpenNamed.js">
-</script>
-</body>
-</html>
