Tommi a13b4d1d30 Partial reland: DataChannelObserver interface change.
This is a partial reland of:
https://webrtc-review.googlesource.com/c/src/+/299142

This CL includes the interface change in DataChannelObserver but
not the code behind it. The point of landing this change first is
to be able to override this method in downstream implementations in
preparation for relanding the rest of the changes.

Bug: webrtc:11547
Change-Id: Ic3fe4fb8084908ef12bd4916b763df5a75604113
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/300362
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39776}
2023-04-06 08:47:53 +00:00
..
2022-01-18 13:46:37 +00:00