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

Merge "Set expected pin length in constructor." into udc-dev am: 0754a888 am: 0ff0b9c8 am: d573a3ae am: d78c34de

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



Change-Id: I86422f8e1256548ada22249d16fca1b6766c17e5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>