title: Custom protocol handler in chrome
body: <p>How do i set up a custom protocol handler in chrome? Something like:</p>
  
  <p>myprotocol://testfile</p>
  
  <p>I would need this to send a request to <a href="http://example.com?query=testfile" rel="noreferrer">http://example.com?query=testfile</a>, then send the httpresponse to my extension.</p>