<!
DOCTYPE HTML>
<
html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1784187
-->
<
head>
<
title>Test for Bug 1784187</
title>
<
script src=
"/tests/SimpleTest/SimpleTest.js"></
script>
<
link rel=
"stylesheet" type=
"text/css" href=
"/tests/SimpleTest/test.css" />
</
head>
<
body>
<
script class=
"testbody" type=
"text/javascript">
SimpleTest.waitForExplicitFinish();
function observeTest(mutationsList) {
for (let mutation of mutationsList) {
for (let n of mutation.addedNodes) {
if (n.id ===
'content') {
is(n.innerHTML.trim(),
"