Tommi 55f72800b4 [DataChannelController] Associate two methods with the network thread
Make DataChannelController's AddSctpDataStream and
RemoveSctpDataStream be required to be called on the network thread.
This moves blocking calls within those methods over to the
SctpDataChannel class instead.

For production code there's no functional change in this CL. However, this CL:

1) Introduces an actual dedicated network thread to
   DataChannelController and SctpDataChannel tests.
2) Removes two data_channel_transport() checks inside DCC that
   were being done on the wrong thread (signaling) and
3) introduces a network calling block to SctpDataChannel, where more
   network thread related work needs to be done and can be bundled.
   (to be done in follow-up CLs).

Bug: webrtc:11547
Change-Id: I6787ac395e61d4a25ae3a74a123e3357cbb46b54
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/298052
Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39688}
2023-03-27 16:01:47 +00:00
..
2022-01-18 13:46:37 +00:00