Add TransportContext class.

remoting/protocol/ice_transport_factory.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_ICE_TRANSPORT_FACTORY_H_
-#define REMOTING_PROTOCOL_ICE_TRANSPORT_FACTORY_H_
-
-#include <list>
-
-#include "base/macros.h"
-#include "remoting/protocol/network_settings.h"
-#include "remoting/protocol/transport.h"
-#include "remoting/signaling/jingle_info_request.h"
-
-namespace cricket {
-class HttpPortAllocatorBase;
-}  // namespace cricket
-
-namespace remoting {
-
-class SignalStrategy;
-
-namespace protocol {
-
-class IceTransportFactory : public TransportFactory {
- public:
-  IceTransportFactory(
-      SignalStrategy* signal_strategy,
-      scoped_ptr<cricket::HttpPortAllocatorBase> port_allocator,
-      const NetworkSettings& network_settings,
-      TransportRole role);
-  ~IceTransportFactory() override;
-
-  // TransportFactory interface.
-  scoped_ptr<Transport> CreateTransport() override;
-
- 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(IceTransportFactory);
-};
-
-}  // namespace protocol
-}  // namespace remoting
-
-#endif  // REMOTING_PROTOCOL_ICE_TRANSPORT_FACTORY_H_