Remove base::SupportsWeakPtr from {Audio,Video}Sender

media/cast/sender/video_sender.h

 // Copyright 2014 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 MEDIA_CAST_SENDER_VIDEO_SENDER_H_
 #define MEDIA_CAST_SENDER_VIDEO_SENDER_H_
 
 #include <memory>
 
 #include "base/callback.h"
@@ skipping 92 matching lines @@
   // OnEncodedVideoFrame().  See header file comments for SenderEncodedFrame for
   // an explanation of these values.
   double last_reported_encoder_utilization_;
   double last_reported_lossy_utilization_;
 
   // This tracks the time when the request was sent to encoder to encode a key
   // frame on receiving a Pli message. It is used to limit the sender not
   // to duplicately respond to multiple Pli messages in a short period.
   base::TimeTicks last_time_attempted_to_resolve_pli_;
 
-  // NOTE: Weak pointers must be invalidated before all other member variables.
-  base::WeakPtrFactory<VideoSender> weak_factory_;
-
   DISALLOW_COPY_AND_ASSIGN(VideoSender);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_SENDER_VIDEO_SENDER_H_