GitLab

This will be used to periodically unfreeze LifecycleUnits, to allow
them to update their state.

Bug: 775644
Change-Id: I498930c8a555ddf3581099e61972aaeac6a36d91
Reviewed-on: https://chromium-review.googlesource.com/1099973
Commit-Queue: François Doray <fdoray@chromium.org>
Reviewed-by: Fadi Meawad <fmeawad@chromium.org>
Reviewed-by: Sébastien Marchand <sebmarchand@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568451}