Lahiru Ginnaliya Gamathige 60c0b442ee Use CallbackList for DtlsState in dtls_transport.
- This contains a CallbackList disconnect and handled it
  by taking the given subscription tag to subscribe and unsubscribe.
- Left the original sigslot variable until downstream is update after
  this change.

Bug: webrtc:11943
No-Try: True
Change-Id: Ie96d74b9594eae11beaa552f61e40f451242bfab
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/203780
Commit-Queue: Lahiru Ginnaliya Gamathige <glahiru@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33285}
2021-02-17 07:42:13 +00:00
..
2021-02-10 15:04:55 +00:00
2020-03-03 14:10:18 +00:00