LayoutTests/compositing/masks/mask-and-drop-shadow-expected.html - WebKit - Git at Google

 <!DOCTYPE html>
 <style>
     div {
         width: 200px;
         height: 200px;
         background: green;
         will-change: transform;
         position: absolute;
         -webkit-mask-image: linear-gradient(45deg, black, transparent);
     }
 </style>

 You should see no red.

 <div></div>
	<!DOCTYPE html>
	<style>
	div {
	width: 200px;
	height: 200px;
	background: green;
	will-change: transform;
	position: absolute;
	-webkit-mask-image: linear-gradient(45deg, black, transparent);
	}
	</style>

	You should see no red.

	<div></div>