Add the DeviceShowLowDiskSpaceNotification policy

Add the DeviceShowLowDiskSpaceNotification policy to control the suppression
of the low disk space notification on enrolled devices. Currently no
notification is shown if multiple users are present on the device. The
policy will give administrators control over the notification instead.
No change of behaviour if the policy is not present.

Design doc: https://docs.google.com/document/d/1_mblglRZlPeWpc1cn9T8vb97rnLEmjA7waiSLp-qKcE

Bug: chromium:1099604
Change-Id: I53bbed664e0f05f8f33a5cd659f0c36e51fbd21f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2270297
Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Reviewed-by: Pavol Marko <pmarko@chromium.org>
Reviewed-by: Igor <igorcov@chromium.org>
Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#794935}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: a793c4dd5dd41b386a18438bf1632f7942436d0a
2 files changed