chromium/chrome/test/data/lazyload/css-background-image.html

<!DOCTYPE html>
<html>
<style>
div.css_bg_image {
  height: 800px;
  background-color: #cccccc;
}
div.a {
  background-image: url("images/fruit1.jpg");
}
div.b {
  background-image: url("images/fruit2.jpg");
}
</style>

<body>
  <div style="height:10000px;"></div>
  <a name="images"></a>
  <div class="css_bg_image a"></div>
  <div class="css_bg_image b"></div>
</body>
</html>