Move code in src/remoting to the new callbacks.

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_CHROMOTING_HOST_H_
 #define REMOTING_CHROMOTING_HOST_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 72 matching lines @@
   // Asynchronously start the host process.
   //
   // After this is invoked, the host process will connect to the talk
   // network and start listening for incoming connections.
   //
   // This method can only be called once during the lifetime of this object.
   void Start();
 
   // Asynchronously shutdown the host process. |shutdown_task| is
   // called after shutdown is completed.
-  void Shutdown(Task* shutdown_task);
+  void Shutdown(const base::Closure& shutdown_task);
 
   // Adds |observer| to the list of status observers. Doesn't take
   // ownership of |observer|, so |observer| must outlive this
   // object. All status observers must be added before the host is
   // started.
   void AddStatusObserver(HostStatusObserver* observer);
 
   ////////////////////////////////////////////////////////////////////////////
   // protocol::ConnectionToClient::EventHandler implementation.
   // TODO(sergeyu): Move this to ClientSession.
@@ skipping 134 matching lines @@
   scoped_ptr<protocol::CandidateSessionConfig> protocol_config_;
 
   bool is_curtained_;
 
   // Whether or not the host is running in "IT2Me" mode, in which connections
   // are pre-authenticated, and hence the local login challenge can be bypassed.
   bool is_it2me_;
 
   std::string access_code_;
 
-  // Stores list of tasks that should be executed when we finish
+  // Stores list of closures that should be executed when we finish
   // shutdown. Used only while |state_| is set to kStopping.
-  std::vector<Task*> shutdown_tasks_;
+  std::vector<base::Closure> shutdown_tasks_;
 
   UiStrings ui_strings_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromotingHost);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_CHROMOTING_HOST_H_