title: file type doesn't support .csv format in window chrome browser
body: <p>I have an issue with input type = 'file'. It shows type with empty string when I upload .csv file(other file type works fine like, pdf, jpg,doc etc).</p>
  
  <p>Example Url is </p>
  
  <p><div class="snippet" data-lang="js" data-hide="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>"http://plnkr.co/edit/1dgAM3I71uzZEqDN3PbX?p=preview"</code></pre>
  </div>
  </div>
  </p>
  
  <p>This above link works fine in ubuntu OS but not in window(chrome) and doesn't show "type" of file(showing empty string ). Is it not supporting the .csv format or having a problem with window chrome. I am using chrome's latest version.</p>