title: Chrome Custom Tabs and push notifications
body: <p>When using an android app with chrome custom tabs, the push notifications can be registered there? And if so, they will apear in the chrome browser, outside the app? 
  How does it behave?</p>
  
  <p>Chrome Custom Tabs:
  <a href="https://developer.chrome.com/multidevice/android/customtabs" rel="nofollow">https://developer.chrome.com/multidevice/android/customtabs</a></p>
  
  <p>Web Push Notifications:
  <a href="https://developers.google.com/web/updates/2015/03/push-notifications-on-the-open-web" rel="nofollow">https://developers.google.com/web/updates/2015/03/push-notifications-on-the-open-web</a></p>