Allow passing both hostname and IP of ICE server into PeerConnection.

webrtc/p2p/base/portallocator.h

Index: webrtc/p2p/base/portallocator.h
diff --git a/webrtc/p2p/base/portallocator.h b/webrtc/p2p/base/portallocator.h
index a77b037e7294133973f83bc41f49ba2dabb836bc..9e7537d8fac9dc909f3a811e7dded18bcd89dfc4 100644
--- a/webrtc/p2p/base/portallocator.h
+++ b/webrtc/p2p/base/portallocator.h
@@ -129,13 +129,12 @@ typedef std::vector<ProtocolAddress> PortList;
 struct RelayServerConfig {
   RelayServerConfig(RelayType type) : type(type) {}
 
-  RelayServerConfig(const std::string& address,
-                    int port,
+  RelayServerConfig(const rtc::SocketAddress& address,
                     const std::string& username,
                     const std::string& password,
                     ProtocolType proto)
       : type(RELAY_TURN), credentials(username, password) {
-    ports.push_back(ProtocolAddress(rtc::SocketAddress(address, port), proto));
+    ports.push_back(ProtocolAddress(address, proto));
   }
 
   // Legacy constructor where "secure" and PROTO_TCP implies PROTO_TLS.
@@ -145,8 +144,7 @@ struct RelayServerConfig {
                     const std::string& password,
                     ProtocolType proto,
                     bool secure)
-      : RelayServerConfig(address,
-                          port,
+      : RelayServerConfig(rtc::SocketAddress(address, port),
                           username,
                           password,
                           (proto == PROTO_TCP && secure ? PROTO_TLS : proto)) {}