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

 <!DOCTYPE html>
 <div style="position: absolute; z-index: -1; width: 240px; height: 240px; background: green"></div>
 <div style="overflow: scroll; will-change: transform; width: 200px; height: 200px; border: 20px dashed black">
   <div style="height: 3000px"></div>
 </div>
	<!DOCTYPE html>
	<div style="position: absolute; z-index: -1; width: 240px; height: 240px; background: green"></div>
	<div style="overflow: scroll; will-change: transform; width: 200px; height: 200px; border: 20px dashed black">
	<div style="height: 3000px"></div>
	</div>