chromium/src/third_party/blink/web_tests/paint/invalidation/background/composited-background-on-both-layers.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <div id="target"
      style="will-change: transform; overflow: scroll; background: red;
             width: 200px; height: 200px; border: 20px dashed black">
   <div style="height: 3000px"></div>
 </div>
 <script src="../resources/text-based-repaint.js"></script>
 <script>
 function repaintTest() {
   target.style.background = 'green';
 }
 onload = runRepaintAndPixelTest;
 </script>
	<!DOCTYPE html>
	<div id="target"
	style="will-change: transform; overflow: scroll; background: red;
	width: 200px; height: 200px; border: 20px dashed black">
	<div style="height: 3000px"></div>
	</div>
	<script src="../resources/text-based-repaint.js"></script>
	<script>
	function repaintTest() {
	target.style.background = 'green';
	}
	onload = runRepaintAndPixelTest;
	</script>