Merge "[DO NOT MERGE] Make a11y overlays trusted." into udc-dev am: 38c3b84e...

Merge "[DO NOT MERGE] Make a11y overlays trusted." into udc-dev am: 38c3b84e am: c1a2b6ca am: 73434a05

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22827660



Change-Id: I2ff136e88362565c2a80f47538e83c10a4892544
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>