title: Run Chrome extension in the background
body: <p>I'm currently creating my first Chrome extension, so far so good.
  It's just a little test where I run multiple timers.</p>
  
  <p>But obviously all my timers reset when I open and close the extension.</p>
  
  <p>So to keep all my timers running, I would have to same them somehow when I close the extension and make them run in the background page.</p>
  
  <p>When I open the extension again, those timers should be send back to the open page.</p>
  
  <p>How would you handle this?</p>
  
  <p>I already have an array of all my timers, what would be the best option for me></p>