title: Chrome inserts a DAPPlugin id into the page increasing the page length?
body: <p>I am currently working on a site for a non profit <a href="http://www.gettingtoknowcancer.org" rel="nofollow noreferrer">Getting to know Cancer</a> and I was running into an odd issue. When I click on the form expand button on the right, Chrome inserts a large space at the end of the page as shown in the image below.
  <img src="https://i.stack.imgur.com/daOee.png" alt="enter image description here"></p>
  
  <p>When I checked the code using F12 on Chrome ,i found that the additional space was due to some code Chrome inserts which is given below :</p>
  
  <pre><code>&lt;embed type="application/x-dap-background" id="DAPPlugin" style="visibility: collapse"&gt;
  </code></pre>
  
  <p>I tested the site in IE,Firefox and Safari as well but I am getting this odd issue in Chrome only,any ideas on what might be causing it and how I can prevent it from happening ?</p>