Harald Alvestrand 8efc914cf3 Replace use of sigslot with CallbackList in data_channel_controller
This is a straightforward replacement; simplifications due to the ability
to inline functions in the lambdas are for a later CL.

Bug: webrtc:11943
Change-Id: I7274cedde507b954f1d8aa8bc560861102eeb264
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/250540
Reviewed-by: Niels Moller <nisse@webrtc.org>
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35936}
2022-02-07 18:08:34 +00:00
..
2021-08-31 14:27:49 +00:00
2022-01-26 09:02:11 +00:00
2021-05-27 09:56:42 +00:00
2022-01-18 13:46:37 +00:00