Fixes for memory and threading issues in cast

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 54 matching lines @@
   scoped_refptr<media::cast::CastEnvironment> cast_environment_;
   scoped_ptr<media::cast::CastSender> cast_sender_;
 
   // 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_;
 
-  // Clock used by CastSender.
-  base::DefaultTickClock clock_;
-
   // Configuration for audio and video.
   media::cast::AudioSenderConfig audio_config_;
   media::cast::VideoSenderConfig video_config_;
   bool audio_configured_;
   bool video_configured_;
   std::vector<FrameInputAvailableCallback> frame_input_available_callbacks_;
   SendPacketCallback send_packet_callback_;
 
   // 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_