historical.html
<!doctype html>
<title>Historical Web Audio API features</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
[
"webkitAudioContext",
"webkitAudioPannerNode",
"webkitOfflineAudioContext",
].forEach(name => {
test(function() {
assert_false(name in window);
}, name + " interface should not exist");
});
</script>