title: Chrome: get URL of active content script tab
body: <p>I have a content script that is run when the user connects to <code>"*://www.youtube.com/*"</code>. I need to know when the URL changes, as YouTube does not open a new 'page', so-to-speak, when you click on a link; rather it changes the URL and page contents (I think). Because of this, my content script doesn't realize that anything has changed. (I know this because it DOES work when I reload the page)</p>
  
  <p>So how do I find out when the URL of the tab that my script is running in has changed? </p>
  
  <p>[Edit]: My question concerns specifically getting the URL of the tab that the content script is running in, rather than getting the url of the active tab.</p>