engagement_test_small_frame_size.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Media Engagement Test</title>
<video autoplay src="engagement_100px_100px_frame_size.webm" id="media"></video>
<script src="/engagement_test.js"></script>

chromium/chrome/test/data/media/engagement/engagement_test_small_frame_size.html