[automerger skipped] Add mechanism for a task's windows to be trusted overlays...

[automerger skipped] Add mechanism for a task's windows to be trusted overlays am: 47fb132e am: c9869e0d -s ours am: ea9b0fc9 -s ours

am skip reason: Merged-In I170cb5a7d22ef569eb36de21cc0bcbef60dd385e with SHA-1 47fb132e is already in history

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

Change-Id: I584244a0952cb0189a2c8b4ebdfa7db1bc6a6f5c