GitLab

Updates the expires_after attribute for 3 histograms that have
been used to generate alerts in the past 90 days and do not already have
a date later than or within 60 days of 2021-02-22.

TBR=chromium-metrics-reviews@google.com

Change-Id: I3bdbe8dd9c2ea644aab3c998fb2019059aeb80ee
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2557785Reviewed-by: Chrome Metrics Logs <chrome-metrics-team+robot@google.com>
Reviewed-by: Weilun Shi <sweilun@chromium.org>
Commit-Queue: Chrome Metrics Logs <chrome-metrics-team+robot@google.com>
Commit-Queue: Weilun Shi <sweilun@chromium.org>
Cr-Commit-Position: refs/heads/master@{#830639}