chromium/third_party/blink/web_tests/virtual/android/fullscreen/video-scrolled-iframe.html

<!DOCTYPE html>
<script>
    runPixelTests = true;
</script>
<script src="../../../fullscreen/full-screen-test.js"></script>
<script>
    var initialized = false;
    var fullscreened = false;
    window.onmessage = function(messageEvent) {
        if (!initialized) {
             window.scrollTo(0, 100);
            // video frame has been painted.
            // Send click to iframe (not the center since this will hit the overlay play button).
            iframe = document.getElementById("frame");
            x = iframe.offsetLeft + 10;
            y = iframe.offsetTop + 10;
            if (window.eventSender) {
                eventSender.mouseMoveTo(x, y);
                eventSender.mouseDown();
                eventSender.mouseUp();
            }
            initialized = true;
            return;
        }

        if (!fullscreened) {
            // The video has been fullscreened.
            consoleWrite(messageEvent.data);
            fullscreened = true;
            endTest();
            return;
        }
    }
</script>
<iframe id="frame" src="../../../fullscreen/resources/video.html" width="320" height="240" allowfullscreen></iframe>
<div style="height:1000px">Video inside iframe should be positioned correctly in overlay fullscreen mode.</div>