title: How to stop chrome from capturing a tab?
body: <p>I'm trying to build an chrome extension similar to the chromecast one.  I am using <a href="https://developer.chrome.com/extensions/tabCapture" rel="noreferrer">chrome.tabCapture</a> to successfully start a audio/video stream.  How do I stop the screen capture?  I want to have a stop button, but I am not sure what to call to stop it.  I can stop the LocalMediaStream, but the tab is still capturing and does not allow me to start a new capture without closing the tab.  Any suggestions or maybe an api page I may have missed? </p>