title: Tell if user has granted website permanent permission to get location in browser
body: <p>I am calling navigator.geolocation.getCurrentPosition with no troubles.  In my web app I have a more user friendly screen that explains the use of the user's location and they press a button to initiate this request.  This is all working lovely jubbly.</p>
  
  <p>However, when a user says "always grant this permission" I want to be able to skip this whole process and just get the location automatically.  So, is there a way to do something like:</p>
  
  <pre><code>if (!navigator.geolocation.hasPermission)
      navigator.geolocation.getCurrentPosition(etc, etc);
  else
      showMyLovelyReasonsWhy();
  </code></pre>
  
  <p>Thanks in advance!</p>