[AF] Profile time precision consistency

Interacting with database/sync converts dates between time_t/Time.
That causes some inconsistencies.

Solution: when comparing two profiles' use_dates discard the
microsecnods.

Bug: 923965
Change-Id: I5491e43bd068917524e3773431523b86522b1de2
Reviewed-on: https://chromium-review.googlesource.com/c/1407779
Reviewed-by: Sebastien Seguin-Gagnon <sebsg@chromium.org>
Commit-Queue: Parastoo Geranmayeh <parastoog@google.com>
Cr-Commit-Position: refs/heads/master@{#624779}
3 files changed