background-no-longer-obscured-after-loading.html

<!DOCTYPE html>
<style>
#a {
    background-image: url(../resources/bluesquare.png);
    background-position: 0px -100px;
    background-repeat: repeat-x;
    height: 1em;
}
#b {
    float: left;
    background-color: white;
}
</style>
<div id="a"><span id="b">This test passes if there is blue to the right</span></div>

chromium/third_party/blink/web_tests/paint/invalidation/background/background-no-longer-obscured-after-loading.html