GitLab

Fix threading issue when adding and removing streams.

Change-Id: Ib2ff6ed87bc7d96a2d0956c604f741be38992c7c
Reviewed-on: https://chromium-review.googlesource.com/1220555Reviewed-by: Kenneth MacKay <kmackay@chromium.org>
Commit-Queue: Jimmy Tobin <jtobin@google.com>
Cr-Commit-Position: refs/heads/master@{#590533}