chromium/third_party/blink/web_tests/fast/backgrounds/size/scaled-sprited-background.html

<!DOCTYPE html>
<style>
div {
    width: 108px;
    height: 20px;
    background: url(../resources/star_sprites.png) no-repeat 0 bottom;
    background-size: 108px auto;
}
</style>
<div></div>