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Test Info:

<!DOCTYPE html>
<html class="test-wait">
<head>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<style>
@keyframes hide {
from { content-visibility: hidden }
}
</style>
</head>
<body>
<div id="fullscreenTarget" style="animation:hide alternate-reverse forwards">
<div id="focusTarget" tabindex="-1"></div>
</div>
<script>
async function crash() {
let fullscreenPromise = null;
await test_driver.bless('open fullscreen', () => {
fullscreenPromise = fullscreenTarget.requestFullscreen();
});
await fullscreenPromise;
focusTarget.focus();
document.documentElement.classList.remove('test-wait');
}
window.onload = crash;
</script>
</body>
</html>