f15189dbce
This removes use of the SignalClose sigslot. This CL includes thread checks for the callback list and updates some call sites to unsubscribe from events before deletion or detaching from a socket instance. Bug: webrtc:11943 Change-Id: Ib66d39aa5cc795b750c9e3eaa85ed6af8b55b2b5 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/258561 Reviewed-by: Niels Moller <nisse@webrtc.org> Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36540}