page_displays_insecure_content.html

<html>
<head><title>Page that displays insecure content</title>
<script>
  function ImageWidth() {
    return document.getElementById("bad_image").width;
  }
</script>
</head>
<body>
This page contains an image which is served over an http connection,
causing insecure content (when this page is loaded over https).<br>
<img id="bad_image" src="http://does-not-exist.test/ssl/google_files/logo.gif"/>

</body>
</html>

chromium/chrome/test/data/ssl/page_displays_insecure_content.html