unified_autoplay.html | Explore in Territory

<!DOCTYPE html>
<html>
<meta charset='utf-8'>
<title>Simple autoplay test page</title>
<video src='bigbuck.webm'></video>
<script>
function attemptPlay() {
  return document.querySelector('video').play().then(function() {
    return true;
  }, function() {
    return false;
  });
}
</script>
</html>

chromium/chrome/test/data/media/unified_autoplay.html