chromium/src/third_party/blink/web_tests/paint/invalidation/compositing/should-not-repaint-composited-opacity.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <style>
 #composited-box {
     will-change: transform;
     width: 100px;
     height: 100px;
     background: green;
     opacity: 0.8;
 }
 </style>
 <script src="../resources/text-based-repaint.js"></script>
 <script>
 function repaintTest() {
     document.getElementById('composited-box').style.opacity = 0.5;
 }
 window.onload = runRepaintTest;
 </script>
 <div id="composited-box"></div>
	<!DOCTYPE html>
	<style>
	#composited-box {
	will-change: transform;
	width: 100px;
	height: 100px;
	background: green;
	opacity: 0.8;
	}
	</style>
	<script src="../resources/text-based-repaint.js"></script>
	<script>
	function repaintTest() {
	document.getElementById('composited-box').style.opacity = 0.5;
	}
	window.onload = runRepaintTest;
	</script>
	<div id="composited-box"></div>