<!DOCTYPE html>
<title>Feature-Policy Fullscreen</title>
<div>Fullscreen</div>
<script>
document.onwebkitfullscreenerror = function() {
parent.postMessage({ type: 'error', enabled: document.webkitFullscreenEnabled }, '*');
};
document.onwebkitfullscreenchange = function() {
if (document.webkitFullscreenElement) {
document.webkitExitFullscreen();
parent.postMessage({ type: 'change', enabled: document.webkitFullscreenEnabled }, '*');
}
};
document.addEventListener('keypress', function() {
document.querySelector('div').webkitRequestFullscreen();
});
window.onload = function() {
focus();
eventSender.keyDown('a', []);
}
</script>