[automerger skipped] [Cherry-pick] Add warning on enabling ANGLE. am:...

[automerger skipped] [Cherry-pick] Add warning on enabling ANGLE. am: d3c75bd9 am: 24503938 -s ours am: 320e827a -s ours

am skip reason: Merged-In I4f856ee1912a59052a6aaf7dff087ce1b649935e with SHA-1 39eb3a5a is already in history

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Settings/+/2794036



Change-Id: I38a1bc20bf1742bce1f8753e075f1585b53c13eb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>