This mirrors the way we time context initialization.

R=jgruber@chromium.org

Change-Id: I1bddc73726ef86e5863012c292e7b4c39dfd076f
Reviewed-on: https://chromium-review.googlesource.com/968241Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52009}