WeakPtr destruction order cleanup: media edition.

media/cast/transport/rtp_sender/rtp_sender.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.
 
 // This file contains the interface to the cast RTP sender.
 
 #ifndef MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_
 #define MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_
 
 #include <map>
@@ skipping 57 matching lines @@
   void UpdateSequenceNumber(Packet* packet);
 
   base::TickClock* clock_;  // Not owned by this class.
   RtpPacketizerConfig config_;
   scoped_ptr<RtpPacketizer> packetizer_;
   scoped_ptr<PacketStorage> storage_;
   PacedSender* const transport_;
   CastTransportRtpStatistics stats_callback_;
   scoped_refptr<base::SingleThreadTaskRunner> transport_task_runner_;
 
+  // NOTE: This must always be last so it's invalidated before other member
+  // variables might be accessed.
   base::WeakPtrFactory<RtpSender> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RtpSender);
 };
 
 }  // namespace transport
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_