title: FileObserver for Chromebook Downloads directory is never notified
body: <p>I have an android app running on Chromebooks. I'm using FileObserver to watch a few common directories and notify changes. This is successful in all locations except the downloads directory on my chromebook.</p>
  <p>Downloads directory on this specific chromebook is <code>/storage/MyFiles/Downloads</code>. Do chrombook downloads directories have special protections? (are we not allowed to monitor there?)</p>
  <p>If this is a security issue or otherwise intentional and you have a source, please share it</p>
  <p>This is how the device filesystem looks in AS:</p>
  <p><a href="https://i.stack.imgur.com/gKs1K.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gKs1K.png" alt="Device Explorer Screenshot" /></a></p>