[automerger skipped] Do not allow non-system apps to provide unverified...

[automerger skipped] Do not allow non-system apps to provide unverified attributions am: ec8a2057 am: b5e0dc4b am: 53fd4c3a -s ours

am skip reason: Merged-In I6a7b0a24359097c0ea2f52cc69637d929a931b4f with SHA-1 ec8a2057 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/31451895



Change-Id: I6781e6276ae1a06bb9964eab984926956403c471
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>