Merge "Announce inattentive sleep warning for accessibility" into sc-dev am:...

Merge "Announce inattentive sleep warning for accessibility" into sc-dev am: 1e13be4c am: 06c8e948 am: 9f33951f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15114541

Change-Id: I6394086225e6727c89ad521a6318592b2fcf2486