LayoutTests/fast/css/webkit-named-image/apple-pay-logo-white/mask.html

<style>
body {
    background-color: black;
}
div {
    width: 100px;
    height: 100px;
    background-color: blue;
    -webkit-mask-image: -webkit-named-image(apple-pay-logo-white);
    -webkit-mask-size: 100% 100%;
}
</style>
<div></div>