Add TransportContext class.

remoting/host/it2me/it2me_host.cc

Index: remoting/host/it2me/it2me_host.cc
diff --git a/remoting/host/it2me/it2me_host.cc b/remoting/host/it2me/it2me_host.cc
index ed1ce1c52ee8a9c48192de6fdfb65fc657043690..0ecec5ba7e8de1a834942569d2745ccea24300d8 100644
--- a/remoting/host/it2me/it2me_host.cc
+++ b/remoting/host/it2me/it2me_host.cc
@@ -9,6 +9,7 @@
 #include "base/strings/string_util.h"
 #include "base/threading/platform_thread.h"
 #include "net/socket/client_socket_factory.h"
+#include "net/url_request/url_request_context_getter.h"
 #include "policy/policy_constants.h"
 #include "remoting/base/auto_thread.h"
 #include "remoting/base/logging.h"
@@ -22,9 +23,12 @@
 #include "remoting/host/it2me_desktop_environment.h"
 #include "remoting/host/policy_watcher.h"
 #include "remoting/host/register_support_host_request.h"
-#include "remoting/host/session_manager_factory.h"
+#include "remoting/protocol/chromium_port_allocator.h"
+#include "remoting/protocol/ice_transport.h"
 #include "remoting/protocol/it2me_host_authenticator_factory.h"
+#include "remoting/protocol/jingle_session_manager.h"
 #include "remoting/protocol/network_settings.h"
+#include "remoting/protocol/transport_context.h"
 #include "remoting/signaling/server_log_entry.h"
 
 namespace remoting {
@@ -227,9 +231,16 @@ void It2MeHost::FinishConnect() {
         protocol::NetworkSettings::kDefaultMaxPort;
   }
 
-  scoped_ptr<protocol::SessionManager> session_manager =
-      CreateHostSessionManager(signal_strategy_.get(), network_settings,
-                               host_context_->url_request_context_getter());
+  scoped_ptr<protocol::TransportFactory> transport_factory(
+      new protocol::IceTransportFactory(new protocol::TransportContext(
+          signal_strategy_.get(),
+          make_scoped_ptr(new protocol::ChromiumPortAllocatorFactory(
+              host_context_->url_request_context_getter())),
+          network_settings, protocol::TransportRole::SERVER)));
+
+  scoped_ptr<protocol::SessionManager> session_manager(
+      new protocol::JingleSessionManager(transport_factory.Pass()));
+
   scoped_ptr<protocol::CandidateSessionConfig> protocol_config =
       protocol::CandidateSessionConfig::CreateDefault();
   // Disable audio by default.