title: Make a Google Chrome Extension work on only one tab
body: <p>Is there a way to set up a google chrome extension (maybe in the manifest?) so that it only functions on exactly one tab? That way, I can let my extension do things on that one tab while I take care of other work on another tab. </p>
  
  <p>I need this ability because my extension pretty much sits on a website and is constantly refreshing the page, looking for updates. </p>
  
  <p>EDIT</p>
  
  <p>Although I cannot display the code of the extension due to a privacy policy, I can explain what it exactly does. For localbitcoins.com, the extension searches for an un-read message notification on the page, and refreshes every 3 seconds to search over and over again. If an unread message is found, it redirects the current URL to the link provided by the notification. From there, it identifies an html form, fills an <code>&lt;input&gt;</code> tag with a message, submits the form, and then returns back to the home page, once again searching for new messages. Again, refreshing every 3 seconds. </p>