chromium/third_party/blink/web_tests/fast/backgrounds/background-position-zoomed.html

<!DOCTYPE html>
<style>
  div {
      zoom: 0.5;
      width: 26px;
      height: 26px;
      background-image: url('resources/bg_position_larger.gif');
      background-position: 36px 36px;
  }
</style>
<div></div>