Merge "Set expected pin length in constructor." into udc-dev am: 0754a888

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23264097



Change-Id: I78cd78b3de097c00c1c4324b303be82f607d1daa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>