Fix LibjingleTransportFactory to refresh STUN/Relay.

remoting/protocol/transport.h

Index: remoting/protocol/transport.h
diff --git a/remoting/protocol/transport.h b/remoting/protocol/transport.h
index fe2f4e1cbfb78d2d749c149008b0905d0d7bfdf0..196b9d25f3ad76927fad9458d316a8a3de463469 100644
--- a/remoting/protocol/transport.h
+++ b/remoting/protocol/transport.h
@@ -43,7 +43,6 @@ namespace remoting {
 namespace protocol {
 
 class ChannelAuthenticator;
-struct TransportConfig;
 
 struct TransportRoute {
   enum RouteType {
@@ -151,8 +150,11 @@ class TransportFactory {
   TransportFactory() { }
   virtual ~TransportFactory() { }
 
-  // Sets configuration for the transports created by this factory.
-  virtual void SetTransportConfig(const TransportConfig& config) = 0;
+  // Called to notify transport factory that a new transport might be created
+  // soon, e.g. when a new session is being created. Implementation may use it
+  // to start asynchronous preparation, e.g. fetch a new relay token if
+  // necessary while the session is being authenticated.
+  virtual void PrepareTokens() = 0;
 
   virtual scoped_ptr<StreamTransport> CreateStreamTransport() = 0;
   virtual scoped_ptr<DatagramTransport> CreateDatagramTransport() = 0;