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Test Info: Warnings

<!DOCTYPE html>
<html class="reftest-wait">
<head>
<meta charset="utf-8">
<script type="application/javascript">
function f()
{
if (speechSynthesis.getVoices().length == 0) {
// No synthesis backend to test this
document.documentElement.removeAttribute('class');
return;
}
var s = new SpeechSynthesisUtterance("hello world");
s.onerror = () => {
// No synthesis backend to test this
document.documentElement.removeAttribute('class');
return;
}
s.onend = () => {
document.documentElement.removeAttribute('class');
};
speechSynthesis.speak(s);
speechSynthesis.cancel();
speechSynthesis.pause();
speechSynthesis.resume();
}
</script>
</head>
<body onload="f();">
</body>
</html>