chromium/third_party/blink/web_tests/paint/theme/adjust-progress-bar-size.html

<!doctype HTML>
<!-- Passes on Mac if the text output specifies a layer with size 160x21 (i.e. not 160x5). On other platforms, 160x5 is expected. -->
<progress id="progress" value="40" max="1000" style="height:5px;top:250px;position:absolute;"></progress>