VolumeRecord is a historical record of a volume that we've seen in
the past. It's now surfaced outside the framework for SystemUI to
drive the notifications that bug users to reinsert missing private
volumes.
Show progress notifications for both storage and package movement
operations. Notify when an empty disk is inserted (no usable volumes)
which launches into the normal format flow.
Add API to forget volumes.
Bug: 20275424, 20275424
Change-Id: I75602c17fdcd4d1f1f62324e1a08c4a33093eefa
b36586a7c9