GitLab

If drivefs needs to restart there is no need to redo all the job for
oauth token minting as the previous one should still be good.

BUG=chromium:897558

Change-Id: I4e1737a94a70476c6312ff11c04b8f3f233e4512
Reviewed-on: https://chromium-review.googlesource.com/c/1293058
Commit-Queue: Sergei Datsenko <dats@chromium.org>
Reviewed-by: Sam McNally <sammc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601877}