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<html>
<body>
<script>
// This test checks if browser attaches the viewport-width client hint in the
// HTTP request headers.
// resources/echo-client-hints-received.py sets the response headers depending on the set
// of client hints it receives in the request headers.
fetch("../resources/echo-client-hints-received.py").then(r => {
if(r.status == 200 && r.headers.has("viewport-width-received") && r.headers.has("viewport-width-deprecated-received")) {
window.top.opener.postMessage('PASS', '*');
}
else {
window.top.opener.postMessage('FAIL', '*');
}
});
</script>
</body>
</html>