[automerger skipped] Make LockscreenCredential remember whether it has invalid...

[automerger skipped] Make LockscreenCredential remember whether it has invalid chars am: 019ec7a6 am: 05693166 am: 2b99fb82 am: afaa9f94 am: bd5e7702 -s ours

am skip reason: Merged-In I5c3c55367c3a294578cd0f97ac0e315a11ed517e with SHA-1 d984e5fd is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2775376



Change-Id: I0f4260ea21de53108cac3150834de8113f501b6c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>