You would have heard of WEBRTC. WEB + RTC (Real Time Communication). The api helps to communicate audio, video, etc data to be communicated through web.
So now, the real time communication data channel had been implemented in Chrome. You might require Chrome 25 for this to run.
In the advanced research has provided us the facility to communicate between Chrome and Firefox.This has been demonstrated through a video in the page.
http://updates.html5rocks.com/2013/02/W ... to-Firefox