Add TransportContext class.

remoting/protocol/webrtc_transport.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_PROTOCOL_WEBRTC_TRANSPORT_H_
 #define REMOTING_PROTOCOL_WEBRTC_TRANSPORT_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "base/timer/timer.h"
 #include "remoting/protocol/port_allocator_factory.h"
 #include "remoting/protocol/transport.h"
 #include "remoting/protocol/webrtc_data_stream_adapter.h"
 #include "remoting/signaling/signal_strategy.h"
 #include "third_party/libjingle/source/talk/app/webrtc/peerconnectioninterface.h"
 
 namespace webrtc {
 class FakeAudioDeviceModule;
 }  // namespace webrtc
 
 namespace remoting {
 namespace protocol {
 
+class TransportContext;
+
 class WebrtcTransport : public Transport,
                         public webrtc::PeerConnectionObserver {
  public:
   WebrtcTransport(rtc::Thread* worker_thread,
-                  PortAllocatorFactory* port_allocator_factory,
-                  TransportRole role);
+                  scoped_refptr<TransportContext> transport_context);
   ~WebrtcTransport() override;
 
   webrtc::PeerConnectionInterface* peer_connection() {
     return peer_connection_;
   }
   webrtc::PeerConnectionFactoryInterface* peer_connection_factory() {
     return peer_connection_factory_;
   }
 
   // Transport interface.
   void Start(EventHandler* event_handler,
              Authenticator* authenticator) override;
   bool ProcessTransportInfo(buzz::XmlElement* transport_info) override;
   StreamChannelFactory* GetStreamChannelFactory() override;
   StreamChannelFactory* GetMultiplexedChannelFactory() override;
   WebrtcTransport* AsWebrtcTransport() override;
 
  private:
+  void OnPortAllocatorCreated(
+      scoped_ptr<cricket::PortAllocator> port_allocator);
+
   void OnLocalSessionDescriptionCreated(
       scoped_ptr<webrtc::SessionDescriptionInterface> description,
       const std::string& error);
   void OnLocalDescriptionSet(bool success, const std::string& error);
   void OnRemoteDescriptionSet(bool send_answer,
                               bool success,
                               const std::string& error);
 
   // webrtc::PeerConnectionObserver interface.
   void OnSignalingChange(
@@ skipping 11 matching lines @@
   void RequestNegotiation();
   void SendOffer();
   void EnsurePendingTransportInfoMessage();
   void SendTransportInfo();
   void AddPendingCandidatesIfPossible();
 
   void Close(ErrorCode error);
 
   base::ThreadChecker thread_checker_;
 
-  PortAllocatorFactory* port_allocator_factory_;
-  TransportRole role_;
+  scoped_refptr<TransportContext> transport_context_;
   EventHandler* event_handler_ = nullptr;
   rtc::Thread* worker_thread_;
 
   scoped_ptr<webrtc::FakeAudioDeviceModule> fake_audio_device_module_;
 
   rtc::scoped_refptr<webrtc::PeerConnectionFactoryInterface>
       peer_connection_factory_;
   rtc::scoped_refptr<webrtc::PeerConnectionInterface> peer_connection_;
 
   bool negotiation_pending_ = false;
 
   scoped_ptr<buzz::XmlElement> pending_transport_info_message_;
   base::OneShotTimer transport_info_timer_;
 
   ScopedVector<webrtc::IceCandidateInterface> pending_incoming_candidates_;
 
   std::list<rtc::scoped_refptr<webrtc::MediaStreamInterface>>
       unclaimed_streams_;
 
   WebrtcDataStreamAdapter data_stream_adapter_;
 
   base::WeakPtrFactory<WebrtcTransport> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebrtcTransport);
 };
 
 class WebrtcTransportFactory : public TransportFactory {
  public:
-  WebrtcTransportFactory(
-      rtc::Thread* worker_thread,
-      SignalStrategy* signal_strategy,
-      scoped_ptr<PortAllocatorFactory> port_allocator_factory,
-      TransportRole role);
+  WebrtcTransportFactory(rtc::Thread* worker_thread,
+                         scoped_refptr<TransportContext> transport_context);
   ~WebrtcTransportFactory() override;
 
   // TransportFactory interface.
   scoped_ptr<Transport> CreateTransport() override;
 
  private:
   rtc::Thread* worker_thread_;
-  SignalStrategy* signal_strategy_;
-  scoped_ptr<PortAllocatorFactory> port_allocator_factory_;
-  TransportRole role_;
+  scoped_refptr<TransportContext> transport_context_;
 
   DISALLOW_COPY_AND_ASSIGN(WebrtcTransportFactory);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_WEBRTC_TRANSPORT_H_