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function sandbox_iframe_test(sandbox, src, title) {
return promise_test(async t => {
const iframe = document.createElement("iframe");
if (sandbox !== "")
iframe.sandbox = sandbox;
iframe.src = src;
let msg = await new Promise(resolve => {
window.addEventListener('message', resolve);
document.body.appendChild(iframe);
});
assert_equals(msg.data, "PASS", "message from opened frame");
await fetch("/client-hints/accept-ch-stickiness/resources/clear-site-data.html");
}, title);
}
function sandbox_popup_listener(src) {
window.addEventListener('message', e => {
window.parent.postMessage(e.data, '*');
});
let popup_window = window.open("/resources/blank.html");
popup_window.location.href = src;
}