Add TransportSession interface to prepare for WebRTC-based transport.

remoting/protocol/libjingle_transport_factory.h

 // Copyright (c) 2012 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_LIBJINGLE_TRANSPORT_FACTORY_H_
 #define REMOTING_PROTOCOL_LIBJINGLE_TRANSPORT_FACTORY_H_
 
 #include <list>
 
 #include "base/callback_forward.h"
 #include "remoting/protocol/network_settings.h"
 #include "remoting/protocol/transport.h"
 
 namespace cricket {
 class HttpPortAllocatorBase;
-class PortAllocator;
 }  // namespace cricket
 
-namespace net {
-class URLRequestContextGetter;
-}  // namespace net
-
 namespace rtc {
-class NetworkManager;
-class PacketSocketFactory;
 class SocketAddress;
 }  // namespace rtc
 
 namespace remoting {
 
 class SignalStrategy;
 class JingleInfoRequest;
 
 namespace protocol {
 
-class LibjingleTransportFactory : public TransportFactory {
+// TODO(sergeyu): Remove this class and move all code to IceTransportFactory.
+class LibjingleTransportFactory {
  public:
   // |signal_strategy| must outlive LibjingleTransportFactory. Need to use
   // cricket::HttpPortAllocatorBase pointer for the |port_allocator|, so that it
   // is possible to configure |port_allocator| with STUN/Relay addresses.
   LibjingleTransportFactory(
       SignalStrategy* signal_strategy,
       scoped_ptr<cricket::HttpPortAllocatorBase> port_allocator,
       const NetworkSettings& network_settings,
       TransportRole role);
+  ~LibjingleTransportFactory();
 
-  ~LibjingleTransportFactory() override;
-
-  // TransportFactory interface.
-  void PrepareTokens() override;
-  scoped_ptr<Transport> CreateTransport() override;
+  void PrepareTokens();
+  scoped_ptr<Transport> CreateTransport();
 
  private:
   void EnsureFreshJingleInfo();
   void OnJingleInfo(const std::string& relay_token,
                     const std::vector<std::string>& relay_hosts,
                     const std::vector<rtc::SocketAddress>& stun_hosts);
 
   SignalStrategy* signal_strategy_;
   scoped_ptr<cricket::HttpPortAllocatorBase> port_allocator_;
   NetworkSettings network_settings_;
   TransportRole role_;
 
   base::TimeTicks last_jingle_info_update_time_;
   scoped_ptr<JingleInfoRequest> jingle_info_request_;
 
   // When there is an active |jingle_info_request_| stores list of callbacks to
   // be called once the |jingle_info_request_| is finished.
   std::list<base::Closure> on_jingle_info_callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(LibjingleTransportFactory);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_LIBJINGLE_TRANSPORT_FACTORY_H_