Just pick the extension’s icon and you’re taken to a distraction free version of Facebook messages.
The extension gets rid of the top bar, blocks pop-ups, and gets rid of the activity sidebar.
Distraction Free Facebook Messenger| Chrome Web Store
Distraction Free Facebook Messenger Cuts Clutter from the Inbox
Chrome: Facebook is a bit of a cluttered mess and the messages section is one of the worst offenders. If you use Facebook mostly for emailing people,
