title: How to keep chrome extension running in background
body: <p>I would like to know how to keep chrome extensions running in background, i.e user does not need to click on the browser extension button at the right hand corner, and the functionality of the extension is still incorporated into the browser. Something like adblock, etc. which runs whenever we open the browser without the user needing to explicitly click on the extension button.</p>
  
  <p>Thanks.</p>