title: RTCPeerConnection is not defined in Firefox 76.0.1
body: <p>I was learning about WebRTC and came across this <a href="https://webrtc-from-chat.glitch.me/" rel="nofollow noreferrer">demo app</a> on MDN which does not work on my Firefox 76.0.1. The console error is : <code>ReferenceError: RTCPeerConnection is not defined</code>. I tried to verify this by creating a new instance of <code>RTCPeerConnection</code> : <code>new RTCPeerConnection()</code> in the console and sure enough, it does not exist. It seems to be a firefox only issue. I did not get this error on other browsers. <strong>Do I need to enable something in my browser in order to use this API?</strong> I find it hard to believe that this API would not be suported by Firefox. </p>
  
  <p>Oh, and it's not just <code>RTCPeerConnection</code>. None of the other peer connection APIs such as <code>RTCIceCandidate</code> are available either.</p>