commit db4568623fdb058a1b26ef81dc727a607b288dc0
author Sebastien Marchand <sebmarchand@chromium.org> Fri Mar 08 16:12:38 2019
committer Commit Bot <commit-bot@chromium.org> Fri Mar 08 16:12:38 2019
tree a928b5d4985c111cd748127e2c8060a2e238482c
parent 35b6a156f5273ca11ca08e76c7f3f45e964ed82b

Add a system metrics logger and use it in SystemMonitor.

This will help validate that SystemMonitor and the WMIRefresher work as
expected with no noticeable performance impact (in addition to the
metrics logged here the ones logged by WMIRefresher will also start
being emitted).

This logger is behind a feature ("SystemMonitorMetricLogger").

Change-Id: I6fd0ea07c6a25190b43a0abb779762f79da34e06
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1492357
Commit-Queue: Sébastien Marchand <sebmarchand@chromium.org>
Reviewed-by: Jesse Doherty <jwd@chromium.org>
Reviewed-by: Etienne Pierre-Doray <etiennep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#639030}