I need your help.

Now I'm making a google extension which prevent user to browsing specific SNS when a switch is turning on.

I already implement an extension without a switch.(so that my access to twitter is always redirected to Pubmed)

I want to implement a switch to enable user to choose on/off of this extension, but have no idea how to implement it.

It seemed that redirecting by background.js and control it by hrome.browserAction.onClicked.addListener(function(Tab tab) {...}); doesen't work well.