Thanks to the CL https://webrtc-review.googlesource.com/c/src/+/83822 there is now no need to destroy the stream asynchronously. But the CL above introduced a leak, the streams were stopped but not destroyed. This CL essentially fixes the leak, it is now safe to destroy the stream right after being stopped as everything happen in the same capture thread. Bug: chromium:851883 Change-Id: I4bf7409246f3957d90040d0d8cf09e98f28d6559 Reviewed-on: https://webrtc-review.googlesource.com/96621 Reviewed-by: Brave Yao <braveyao@webrtc.org> Reviewed-by: Zijie He <zijiehe@chromium.org> Commit-Queue: Brave Yao <braveyao@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24519}