Show lockscreen widgets for the current user.

Also shows the owner info and next alarm for the current user.
AppWidgetService now assumes that any widgets running in the system process are for the
current user, so that lockscreen shows widgets for the current user

Bug: 7211754
Bug: 7212421

Change-Id: Iaf0edc60e49af0afe42625c0b2dcf100c9ecc178
3 files changed