floating-self-painting-frame.html | Explore in Territory

<!DOCTYPE html>
<style>
  iframe {
    float: left;
    height: 100%;
    width: 100%; 
  }
</style> 
<script src="../../resources/run-after-layout-and-paint.js"></script>
<iframe  id="target" name="content" srcdoc="<div style='width: 300px; height:400px; background: blue'></div>" style="height: 119px;"></iframe>
<script>
if (window.internals)
    internals.settings.setPreferCompositingToLCDTextEnabled(true);
onload = function() {
	runAfterLayoutAndPaint(function() {
	    target.style.height = "600px";
	}, true);
}
</script>

chromium/third_party/blink/web_tests/compositing/iframes/floating-self-painting-frame.html