LayoutTests/fullscreen/full-screen-render-inline.html

<style>
body {
    font-family: ahem;
    -webkit-font-smoothing: none;
}
</style>
<summary>a<span>b<div>c</div>d</span>e</summary>
<script>
    if ("webkitRequestFullScreen" in Element.prototype) {
        if (window.testRunner)
            testRunner.waitUntilDone();
        document.body.offsetTop;
        var span = document.getElementsByTagName('span')[0];

        var fullscreenChangeEvent = function(event) {
            if (document.webkitIsFullScreen) {
                setTimeout(function () {
                    document.webkitCancelFullScreen();
                }, 0)
            } else {
                if (window.testRunner)
                    testRunner.notifyDone();
            }
        };

        document.addEventListener('webkitfullscreenchange', fullscreenChangeEvent);

        document.addEventListener('keydown', function () {
            span.webkitRequestFullScreen();
        });
        if (window.eventSender)
            eventSender.keyDown('a');
    }
</script>