Without this |ready_runners_| might still have entries left if the yield call comes from another task queue (only done in testing). Bug: webrtc:10365 Change-Id: I704249e00bf5e75e1f58fdda1809b955de20c304 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/132713 Reviewed-by: Niels Moller <nisse@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27596}