Bug 1318167 - Part 1: Give RTCIceCandidateInit.candidate a default value. r=smaug,jib

Differential Revision: https://phabricator.services.mozilla.com/D23219

--HG--
extra : moz-landing-system : lando

dom/media/PeerConnection.jsm

@@ -1107,7 +1107,6 @@ class RTCPeerConnection {
       containsTrickle(topSection) || sections.every(containsTrickle);
   }
 
-  // TODO: Implement processing for end-of-candidates (bug 1318167)
   addIceCandidate(cand, onSucc, onErr) {
     if (cand === null) {
       throw new this._win.DOMException(

dom/webidl/RTCIceCandidate.webidl

@@ -8,7 +8,7 @@
  */
 
 dictionary RTCIceCandidateInit {
-  required DOMString candidate;
+  DOMString candidate = "";
   DOMString? sdpMid = null;
   unsigned short? sdpMLineIndex = null;
   DOMString? usernameFragment = null;
@@ -16,7 +16,7 @@ dictionary RTCIceCandidateInit {
 
 [Pref="media.peerconnection.enabled",
  JSImplementation="@mozilla.org/dom/rtcicecandidate;1",
- Constructor(RTCIceCandidateInit candidateInitDict)]
+ Constructor(optional RTCIceCandidateInit candidateInitDict)]
 interface RTCIceCandidate {
   attribute DOMString       candidate;
   attribute DOMString?      sdpMid;

dom/webidl/RTCPeerConnection.webidl

@@ -97,7 +97,7 @@ interface RTCPeerConnection : EventTarget  {
   readonly attribute RTCSessionDescription? currentRemoteDescription;
   readonly attribute RTCSessionDescription? pendingRemoteDescription;
   readonly attribute RTCSignalingState signalingState;
-  Promise<void> addIceCandidate ((RTCIceCandidateInit or RTCIceCandidate)? candidate);
+  Promise<void> addIceCandidate (optional (RTCIceCandidateInit or RTCIceCandidate) candidate);
   readonly attribute boolean? canTrickleIceCandidates;
   readonly attribute RTCIceGatheringState iceGatheringState;
   readonly attribute RTCIceConnectionState iceConnectionState;