GitLab

Keep metric "Download.Database.IsAvailable" which is helpful to detect
critical issue in download sqlite db.

Bug: 1088728
Change-Id: I63be65de5529a1666dd3edfde9a545279da711b6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2363668Reviewed-by: David Trainor <dtrainor@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Commit-Queue: Xing Liu <xingliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815318}