title: How to use chrome.downloads.downloaditem.filename?
body: <p>I am developing an chrome extension, and the working is:</p>
  <ol>
  <li>whenever any file is downloaded from browser than extension will know that file has been downloaded</li>
  <li>extension will also have downloaded file path.</li>
  </ol>
  <p>For <strong>2 point</strong> to know file path <a href="https://stackoverflow.com/questions/35375892/getting-the-absolute-path-of-file-downloaded-through-a-chrome-extension">Getting the absolute path of file downloaded through a chrome extension</a> gives answer to use <code>chrome.downloads.DownloadItem.filename</code> but I don't know how to implement it.</p>
  <p>And still looking for answer for <strong>1 point</strong></p>
  <p>Thanks in advance :)</p>