Implicitly retaining self pointer (assuming this is intended behavior) causes compiler warning `-Wimplicit-retain-self`. We should do it explicitly.
Bug: webrtc:9971
Change-Id: If77a67168d8a65ced78d5119b9a7332391d20bc9
Reviewed-on: https://webrtc-review.googlesource.com/c/109641
Commit-Queue: Jiawei Ou <ouj@fb.com>
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Reviewed-by: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25609}
4aeb35b6d0