tree 02344ef458e1ea46b0716d436e035bed1550ff0a
parent 910ec5b95d98c81edc5a8d40bc0210b0559f371b
author David Zeuthen <zeuthen@chromium.org> 1381345995 -0700
committer chrome-internal-fetch <chrome-internal-fetch@google.com> 1381365101 +0000

Add Installer.OSAgeDays metric

This adds a new metric conveying the age of the running OS instance,
where this is defined as the time-span between the current wall-clock
time and the time-stamp of the /etc/lsb-release file. This metric is
reported daily.

BUG=chromium:304950
TEST=New unit tests for daily metrics + unit tests pass. Manual test
    for Installer.OSAgeDays by inspecting chrome://histograms.

Change-Id: I6713bed6730641a95443372a3e3166c4e1dc64ee
Reviewed-on: https://chromium-review.googlesource.com/172162
Reviewed-by: Chris Sosa <sosa@chromium.org>
Commit-Queue: David Zeuthen <zeuthen@chromium.org>
Tested-by: David Zeuthen <zeuthen@chromium.org>