title: How to handle wait message poup when we try to download files using protractor
body: <p>I am able to download files which are of less size, but when I am trying to download big files I am getting pop div with message please wait. This is happening only for large files. Could you please tell me how to handle this. My configurations are as below.</p>
  
  <pre><code>prefs: {
    download: {
       'prompt_for_download': false,
       'directory_upgrade': true,
       'default_directory': 'E:/Download_Pro/test'
     }
  }
  </code></pre>