WeakPtr destruction order cleanup: media edition.

media/cast/transport/pacing/paced_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.
 
 #ifndef MEDIA_CAST_TRANSPORT_PACING_PACED_SENDER_H_
 #define MEDIA_CAST_TRANSPORT_PACING_PACED_SENDER_H_
 
 #include <list>
 #include <vector>
 
@@ skipping 67 matching lines @@
   PacketSender* transport_;  // Not owned by this class.
   scoped_refptr<base::SingleThreadTaskRunner> transport_task_runner_;
   size_t burst_size_;
   size_t packets_sent_in_burst_;
   base::TimeTicks time_last_process_;
   // Note: We can't combine the |packet_list_| and the |resend_packet_list_|
   // since then we might get reordering of the retransmitted packets.
   PacketList packet_list_;
   PacketList resend_packet_list_;
 
+  // NOTE: This must always be last so it's invalidated before other member
+  // variables might be accessed.
   base::WeakPtrFactory<PacedSender> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PacedSender);
 };
 
 }  // namespace transport
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_TRANSPORT_PACING_PACED_SENDER_H_