[automerger skipped] Add mechanism for a task's windows to be trusted overlays am: 47fb132ef2 am: 12c795620e -s ours am: 901c25122b -s ours am: 5af485b603 -s ours

am skip reason: Merged-In I170cb5a7d22ef569eb36de21cc0bcbef60dd385e with SHA-1 954ce27d13 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15975849

Change-Id: I42da42b3c4f14290c4410c5a6d02dc6fdb3db52f