In callers where it's non-trivial to explicitly pass the right SocketFactory, pull the call to rtc::Thread::socketserver() into the caller, with a TODO comment. Bug: webrtc:13145 Change-Id: I029d3adca385d822180e089f016c3778e0d4fd0c Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/231227 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35063}