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diff --git a/dom/html/test/test_bug172261.html b/dom/html/test/test_bug172261.html
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+++ b/dom/html/test/test_bug172261.html
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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=172261
+-->
+<head>
+  <title>Test for Bug 172261</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>        
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=172261">Mozilla Bug 172261</a>
+<p id="display">
+  <iframe id="test"></iframe>
+</p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+  /** Test for Bug 172261 **/
+  SimpleTest.waitForExplicitFinish();
+  SimpleTest.requestFlakyTimeout("untriaged");
+
+  var callable = false;
+  function toggleCallable() { callable = true; }
+
+  var doTestInIframe = false;
+
+  // Shouldn't do history stuff from inside onload
+  addLoadEvent(function() { setTimeout(startTest, 10) });
+
+  function startTest() {
+    // First, create a dummy document.  Use onunload handlers to make sure
+    // bfcache doesn't screw us up.
+    var doc = $("test").contentDocument;
+    
+    doc.write("<html><body onunload=''>First</body></html>");
+    doc.close();
+
+    // Now write our test document
+    doc.write("<html><script>window.onerror = parent.onerror; if (parent.doTestInIframe) { parent.is(document.domain, parent.document.domain, 'Domains should match');  parent.toggleCallable(); } <"  + "/script><body>Second</body></html>");
+    doc.close();
+
+    $("test").onload = goForward;
+    history.back();
+  }
+
+  function goForward() {
+      $("test").onload = doTest;
+      doTestInIframe = true;
+      history.forward();
+  }
+
+  function doTest() {
+    is($("test").contentDocument.domain, document.domain,
+       "Domains should match 2");
+    is($("test").contentDocument.location.href, location.href,
+         "Locations should match");
+    is(callable, true, "Subframe should be able to call us");
+    SimpleTest.finish();
+  }
+</script>
+</pre>
+</body>
+</html>
+