Enables delegating signal strategy for It2Me Host.

remoting/client/plugin/delegating_signal_strategy.h

-// Copyright 2013 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_CLIENT_PLUGIN_DELEGATING_SIGNAL_STRATEGY_H_
-#define REMOTING_CLIENT_PLUGIN_DELEGATING_SIGNAL_STRATEGY_H_
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "base/observer_list.h"
-#include "remoting/signaling/signal_strategy.h"
-
-namespace base {
-class SingleThreadTaskRunner;
-}  // namespace base
-
-namespace remoting {
-
-class DelegatingSignalStrategy : public SignalStrategy {
- public:
-  typedef base::Callback<void(const std::string&)> SendIqCallback;
-
-  DelegatingSignalStrategy(std::string local_jid,
-                       const SendIqCallback& send_iq_callback);
-  ~DelegatingSignalStrategy() override;
-
-  void OnIncomingMessage(const std::string& message);
-
-  // SignalStrategy interface.
-  void Connect() override;
-  void Disconnect() override;
-  State GetState() const override;
-  Error GetError() const override;
-  std::string GetLocalJid() const override;
-  void AddListener(Listener* listener) override;
-  void RemoveListener(Listener* listener) override;
-  bool SendStanza(std::unique_ptr<buzz::XmlElement> stanza) override;
-  std::string GetNextId() override;
-
- private:
-  std::string local_jid_;
-  SendIqCallback send_iq_callback_;
-
-  base::ObserverList<Listener> listeners_;
-
-  DISALLOW_COPY_AND_ASSIGN(DelegatingSignalStrategy);
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_CLIENT_PLUGIN_DELEGATING_SIGNAL_STRATEGY_H_