Move PortAllocator creation out of LibjingleTransportFactory.

remoting/protocol/connection_to_host.cc

Index: remoting/protocol/connection_to_host.cc
diff --git a/remoting/protocol/connection_to_host.cc b/remoting/protocol/connection_to_host.cc
index 0a568f69248d50f393fb9eccf4bb5e671eeae075..586dfcdf7ebfcb2fbf17ac31857e8e777b6d11c3 100644
--- a/remoting/protocol/connection_to_host.cc
+++ b/remoting/protocol/connection_to_host.cc
@@ -81,9 +81,9 @@ void ConnectionToHost::Connect(scoped_refptr<XmppProxy> xmpp_proxy,
 
   scoped_ptr<TransportFactory> transport_factory(
       new PepperTransportFactory(pp_instance_));
-  session_manager_.reset(new JingleSessionManager(transport_factory.Pass()));
-  session_manager_->Init(signal_strategy_.get(), this,
-                         NetworkSettings(allow_nat_traversal_));
+  session_manager_.reset(new JingleSessionManager(
+      transport_factory.Pass(), true));
+  session_manager_->Init(signal_strategy_.get(), this);
 }
 
 void ConnectionToHost::Disconnect(const base::Closure& shutdown_task) {