Refactor IT2Me-specific functions into a HostObserver subclass.

remoting/host/chromoting_host.h

 // Copyright (c) 2011 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_HOST_CHROMOTING_HOST_H_
 #define REMOTING_HOST_CHROMOTING_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 153 matching lines @@
   Encoder* CreateEncoder(const protocol::SessionConfig& config);
 
   std::string GenerateHostAuthToken(const std::string& encoded_client_token);
 
   void AddAuthenticatedClient(ClientSession* client,
                               const protocol::SessionConfig& config,
                               const std::string& jid);
 
   int AuthenticatedClientsCount() const;
 
-  void EnableCurtainMode(bool enable);
-
   void StopScreenRecorder();
   void OnScreenRecorderStopped();
 
   // Called from Shutdown() or OnScreenRecorderStopped() to finish shutdown.
   void ShutdownFinish();
 
   // Unless specified otherwise all members of this class must be
   // used on the network thread only.
 
   // Parameters specified when the host was created.
@@ skipping 28 matching lines @@
 
   // Configuration of the protocol.
   scoped_ptr<protocol::CandidateSessionConfig> protocol_config_;
 
   // Stores list of tasks that should be executed when we finish
   // shutdown. Used only while |state_| is set to kStopping.
   std::vector<base::Closure> shutdown_tasks_;
 
   // TODO(sergeyu): The following members do not belong to
   // ChromotingHost and should be moved elsewhere.
-  bool is_curtained_;
   bool is_it2me_;
   std::string access_code_;
   UiStrings ui_strings_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromotingHost);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_CHROMOTING_HOST_H_