large_scrollable_page_with_adiframe_writer.html

<html>
<head>
<style>
div.bottom {
  position: absolute;
  top: 10000px;
  left: 0px;
  width: 1px;
  height: 1px;
}
p {
  position: fixed;
}
</style>
</head>
<body marginwidth="0" marginheight="0">
<script src="ad_iframe_writer.js"></script>
<!-- To trigger the first contentful paint -->
<p>
This page is large and scrollable and includes an ad_iframe_writer.js.
To tag frames created by the ad_iframe_writer, add the script to the
filter list.
</p>
<!-- To be positioned further down in the main page to make the page scrollable -->
<div class="bottom"></div>
</body>
</html>

chromium/components/test/data/ads_observer/large_scrollable_page_with_adiframe_writer.html