<!-- Test passes if doesn't crash. -->
<style>
* {
    background-size: 1px 16777218;
    background-image: -webkit-filter(url(''), contrast(0));
}
</style>
PASS if test does not crash or cause an ASSERT failure.
<script>
    if (window.testRunner)
        window.testRunner.dumpAsText(false);
</script>