Add the option to disable IPv6 ICE candidates on WiFi

webrtc/sdk/android/api/org/webrtc/PeerConnection.java

Index: webrtc/sdk/android/api/org/webrtc/PeerConnection.java
diff --git a/webrtc/sdk/android/api/org/webrtc/PeerConnection.java b/webrtc/sdk/android/api/org/webrtc/PeerConnection.java
index 784b590c088d94f98275c92edda946e2cc67ae35..4e91a1141c8547891cf8d99b4844e058b62332c5 100644
--- a/webrtc/sdk/android/api/org/webrtc/PeerConnection.java
+++ b/webrtc/sdk/android/api/org/webrtc/PeerConnection.java
@@ -161,6 +161,7 @@ public class PeerConnection {
     public boolean pruneTurnPorts;
     public boolean presumeWritableWhenFullyRelayed;
     public Integer iceCheckMinInterval;
+    public boolean disableIPv6OnWifi;
 
     public RTCConfiguration(List<IceServer> iceServers) {
       iceTransportsType = IceTransportsType.ALL;
@@ -179,6 +180,7 @@ public class PeerConnection {
       pruneTurnPorts = false;
       presumeWritableWhenFullyRelayed = false;
       iceCheckMinInterval = null;
+      disableIPv6OnWifi = false;
     }
   };