[automerger skipped] [pm] forbid deletion of protected packages am: b6680141 -s ours

am skip reason: Merged-In Iba408e536b340ea5d66ab499442c0c4f828fa36f with SHA-1 3ac6aa1e is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19928701



Change-Id: Ic945a3e49c4d4185f62e2273022b0c61a0cb13ef
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>