drag-and-drop-autoscroll-mainframe.html

<!DOCTYPE html>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="resources/drag-and-drop-autoscroll-frame.js"></script>
<style>
  #draggable {
    padding: 5pt;
    border: 3px solid #00cc00;
    background: #00cccc;
    width: 80px;
    cursor: pointer;
  }
  #container {
    position: relative;
    left: 2000px;
    top: 2000px;
  }
  #sample {
    width: 2000px;
    height: 2000px;
  }
  body,html {
    margin: 0;
  }
</style>

<div id="container">
  Manual steps:
  <ol>
    <li>Drag "Drop Me" to edge of window</li>
    <li>You should see scrolling</li>
  </ol>
  <div id="draggable" draggable="true">Drop Me</div>
  <div id="scrollbars" style="overflow: scroll"><div>scrollbars</div></div>
  <table id="sample" border="1">
    <tr><td width="50%">North West</td><td width="50%">North East</td></tr>
    <tr><td width="50%">South West</td><td width="50%">South East</td></tr>
  </table>
</div>

chromium/third_party/blink/web_tests/fast/events/drag-and-drop-autoscroll-mainframe.html