Cast: Don't create threads for each CastSessionDelegate

chrome/renderer/media/cast_session_delegate.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 CHROME_RENDERER_MEDIA_CAST_SESSION_DELEGATE_H_
 #define CHROME_RENDERER_MEDIA_CAST_SESSION_DELEGATE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 60 matching lines @@
   void StartSendingInternal();
 
   void StatusNotificationCB(
       media::cast::transport::CastTransportStatus status);
 
   base::ThreadChecker thread_checker_;
   scoped_refptr<media::cast::CastEnvironment> cast_environment_;
   scoped_ptr<media::cast::CastSender> cast_sender_;
   scoped_ptr<media::cast::transport::CastTransportSender> cast_transport_;
 
-  // Utilities threads owned by this class. They are used by CastSender for
-  // encoding.
-  // TODO(hclam): See crbug.com/317006 for more details.
-  // This class shouldn't create and own threads.
-  base::Thread audio_encode_thread_;
-  base::Thread video_encode_thread_;
-
   // Configuration for audio and video.
   scoped_ptr<media::cast::AudioSenderConfig> audio_config_;
   scoped_ptr<media::cast::VideoSenderConfig> video_config_;
 
   FrameInputAvailableCallback audio_frame_input_available_callback_;
   FrameInputAvailableCallback video_frame_input_available_callback_;
 
   net::IPEndPoint local_endpoint_;
   net::IPEndPoint remote_endpoint_;
   bool transport_configured_;
 
   // Proxy to the IO message loop.
   scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(CastSessionDelegate);
 };
 
 #endif  // CHROME_RENDERER_MEDIA_CAST_SESSION_DELEGATE_H_