Remove the indecisive attribute/getter on PeerConnection

Author: Tony Herre

explainer-use-case-1.md

@@ -94,8 +94,8 @@ dictionary RtpHeaderExtensionInit {
 
 ```javascript
 partial interface PeerConnection {
-  // There may be an RtpTransport with no RtpSenders and no RtpReceivers
-  readonly attribute sequence<RtpTransport> getRtpTransports();
+  // There may be an RtpTransport with no RtpSenders and no RtpReceivers.
+  readonly attribute RtpTransport rtpTransport;
 }
 partial interface RtpSender {
   // shared between RtpSenders in the same BUNDLE group