Use correct thread for audio capturing and encoding.

remoting/host/client_session.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_HOST_CLIENT_SESSION_H_
 #define REMOTING_HOST_CLIENT_SESSION_H_
 
 #include <list>
 
 #include "base/memory/ref_counted.h"
@@ skipping 71 matching lines @@
     virtual void OnClientDimensionsChanged(ClientSession* client,
                                            const SkISize& size) = 0;
 
    protected:
     virtual ~EventHandler() {}
   };
 
   // |event_handler| must outlive |this|. |desktop_environment_factory| is only
   // used by the constructor to create an instance of DesktopEnvironment.
   ClientSession(EventHandler* event_handler,
+                scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner,
                 scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner,
                 scoped_refptr<base::SingleThreadTaskRunner> encode_task_runner,
                 scoped_refptr<base::SingleThreadTaskRunner> network_task_runner,
                 scoped_ptr<protocol::ConnectionToClient> connection,
                 DesktopEnvironmentFactory* desktop_environment_factory,
                 const base::TimeDelta& max_duration);
 
   // protocol::HostStub interface.
   virtual void NotifyClientDimensions(
       const protocol::ClientDimensions& dimensions) OVERRIDE;
@@ skipping 107 matching lines @@
   base::WeakPtrFactory<protocol::ClipboardStub> client_clipboard_factory_;
 
   // The maximum duration of this session.
   // There is no maximum if this value is <= 0.
   base::TimeDelta max_duration_;
 
   // A timer that triggers a disconnect when the maximum session duration
   // is reached.
   base::OneShotTimer<ClientSession> max_duration_timer_;
 
+  scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> encode_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_;
 
   // Schedulers for audio and video capture.
   scoped_refptr<AudioScheduler> audio_scheduler_;
   scoped_refptr<VideoScheduler> video_scheduler_;
 
   // Number of screen recorders and audio schedulers that are currently being
   // used or shutdown. Used to delay shutdown if one or more
   // recorders/schedulers are asynchronously shutting down.
   int active_recorders_;
 
   // The task to be executed when the session is completely stopped.
   base::Closure done_task_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientSession);
 };
 
 // Destroys |ClienSession| instances on the network thread.
 struct ClientSessionTraits {
   static void Destruct(const ClientSession* client);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_CLIENT_SESSION_H_