GitLab

Add a new histogram metric tracking the number of daily
suspends triggered by Chromebooks' lids being closed.

Bug: 782953
Change-Id: I86540cec8b677823b00d79d8699dc005c238ab1d
Reviewed-on: https://chromium-review.googlesource.com/780427
Commit-Queue: Dan Erat <derat@chromium.org>
Reviewed-by: Michael Giuffrida <michaelpg@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#518447}