GitLab

Start tracking user session initialization in local state and use
that flag to determine whether to force a policy load instead of relying
on the oauth token status. This is important because forcing a policy load
when it's not strictly required can lock users out of their accounts.

This flag is not persisted across restarts of ephemeral sessions (including crash-induced restarts) so policy code will force a policy reload after a crash (identical to previous ephemeral behavior, so no behavior change from this CL)

BUG=684031

Review-Url: https://codereview.chromium.org/2711113003
Cr-Commit-Position: refs/heads/master@{#455727}