Relanding: Add the url attribute to the IceCandidate (Java Wrapper)

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

Index: webrtc/sdk/android/api/org/webrtc/IceCandidate.java
diff --git a/webrtc/sdk/android/api/org/webrtc/IceCandidate.java b/webrtc/sdk/android/api/org/webrtc/IceCandidate.java
index 3476ab4f194fc094dff37f6dec91283336a7b6e9..cfdfe600a0a3ae68824b7c9a79dd8c7f25c3a265 100644
--- a/webrtc/sdk/android/api/org/webrtc/IceCandidate.java
+++ b/webrtc/sdk/android/api/org/webrtc/IceCandidate.java
@@ -18,14 +18,24 @@ public class IceCandidate {
   public final String sdpMid;
   public final int sdpMLineIndex;
   public final String sdp;
+  public final String serverUrl;
 
   public IceCandidate(String sdpMid, int sdpMLineIndex, String sdp) {
     this.sdpMid = sdpMid;
     this.sdpMLineIndex = sdpMLineIndex;
     this.sdp = sdp;
+    this.serverUrl = "";
+  }
+
+  // Only be called internally from JNI.
+  private IceCandidate(String sdpMid, int sdpMLineIndex, String sdp, String serverUrl) {
+    this.sdpMid = sdpMid;
+    this.sdpMLineIndex = sdpMLineIndex;
+    this.sdp = sdp;
+    this.serverUrl = serverUrl;
   }
 
   public String toString() {
-    return sdpMid + ":" + sdpMLineIndex + ":" + sdp;
+    return sdpMid + ":" + sdpMLineIndex + ":" + sdp + ":" + serverUrl;
   }
 }