GitLab

Now that thread annotations are available, we should use them.

Change-Id: I06a516f76ebffbd56ec3c7d68666f34c6012da8b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1759899
Commit-Queue: Kenneth MacKay <kmackay@chromium.org>
Reviewed-by: Yuchen Liu <yucliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#688353}