title: Associate requests with active page
body: <p>I'm working on a browser extension (compatible with Chrome, FF, Opera, and Edge) and I'm trying to figure out how to associate requests to domains outside of the current page.  For example, when you go to google.com a lot of requests to domains other than google.com occur such as to gstatic.com.</p>
  
  <p>An extension like NoScript shows all of the requested domains that a page made and lets you allow or deny.  I'm trying to get a similar functionality.</p>
  
  <p>Is this something that can be done in the content script or is there some way to keep state information in the background script that I can then display in the popup?  Obviously it's possible but I'm just not seeing which callback I can use. </p>