GitLab

SpinLock class is missing LOCKABLE annotation, so adds it.
Also adds other lock function annotations.

Change-Id: I9c75b6bd41aa63bd3a0350342ed4476c92174ca1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2505690Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Benoit L <lizeb@chromium.org>
Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#821800}