1<!doctype html>
2<html>
3  <head>
4    <style type="text/css">
5      body { height: 200vh; }
6    </style>
7  </head>
8  <body>
9    <!--
10    Below info are used in smoothness unittest only. use URL below to get the 
11    diagnostic info which is used when this page failed in test due to the 
12    scroll bar didn't show up.
13    scrollable_page.html?show_scroll_diagnosis_info
14    -->
15    <div id="info"></div>
16    <script>
17      var txt = "<h3>Screen info (Used for diagnosis):</h3>"
18                + "<p>Total width/height: " + screen.width + "*" + screen.height
19                + "</p><p>Available width/height: " + screen.availWidth + "*" 
20                + screen.availHeight + "</p><p>Color depth: "
21                + screen.colorDepth + "</p><p>Color resolution: "
22                + screen.pixelDepth + "</p><p>Body scrollable height: "
23                + document.body.scrollHeight + "</p><p>Body offset height: "
24                + document.body.offsetHeight + "</p><p>Body client height: "
25                + document.body.clientHeight + "</p><p>Window inner height: "
26                + window.innerHeight + "</p><p>Window device Pixel Ratio: "
27                + window.devicePixelRatio + "</p>";
28      if (window.location.search.substr(1) == "show_scroll_diagnosis_info") {
29          document.getElementById("info").innerHTML = txt;
30      }
31    </script>
32  </body>
33</html>
34