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diff --git a/dom/html/test/test_bug446483.html b/dom/html/test/test_bug446483.html
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+++ b/dom/html/test/test_bug446483.html
@@ -0,0 +1,47 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=446483
+-->
+<head>
+  <title>Test for Bug 446483</title>
+  <script type="application/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=446483">Mozilla Bug 446483</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 446483 **/
+
+function gc() {
+  SpecialPowers.gc();
+}
+
+function runTest() {
+  document.getElementById('display').innerHTML =
+    '<iframe src="bug446483-iframe.html"><\/iframe>\n' +
+    '<iframe src="bug446483-iframe.html"><\/iframe>\n';
+
+  setInterval(gc, 1000);
+
+  setTimeout(function() {
+    document.getElementById('display').innerHTML = '';
+    ok(true, '');
+    SimpleTest.finish();
+  }, 4000);
+}
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.requestFlakyTimeout("untriaged");
+addLoadEvent(runTest);
+
+</script>
+</pre>
+</body>
+</html>