GitLab

This is a useful histogram, so postpone its expiry until after M79.

BUG=975200

Change-Id: Id6b8c2b5d76d1c65cc8dac1291ab0eaaa74e1494
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1691867Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Commit-Queue: Ahmed Fakhry <afakhry@chromium.org>
Cr-Commit-Position: refs/heads/master@{#675793}