Adding IceConfig option to assume TURN/TURN candidate pairs will work.

webrtc/p2p/base/relayport.cc

Index: webrtc/p2p/base/relayport.cc
diff --git a/webrtc/p2p/base/relayport.cc b/webrtc/p2p/base/relayport.cc
index 21dc41a126a222ff371457e2c0bf8dcec4978673..da5e789d268665b407164ba6f89dc24e5627b4e0 100644
--- a/webrtc/p2p/base/relayport.cc
+++ b/webrtc/p2p/base/relayport.cc
@@ -276,7 +276,8 @@ void RelayPort::PrepareAddress() {
 }
 
 Connection* RelayPort::CreateConnection(const Candidate& address,
-                                        CandidateOrigin origin) {
+                                        CandidateOrigin origin,
+                                        const IceConfig& config) {
   // We only create conns to non-udp sockets if they are incoming on this port
   if ((address.protocol() != UDP_PROTOCOL_NAME) &&
       (origin != ORIGIN_THIS_PORT)) {
@@ -301,7 +302,7 @@ Connection* RelayPort::CreateConnection(const Candidate& address,
     }
   }
 
-  Connection * conn = new ProxyConnection(this, index, address);
+  Connection* conn = new ProxyConnection(this, index, address, config);
   AddOrReplaceConnection(conn);
   return conn;
 }