Merge "Move unknown state to 0 and shift up others per the guidance of metrics...

Merge "Move unknown state to 0 and shift up others per the guidance of metrics council" into udc-dev am: b9186790 am: 7baa9573

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21899899



Change-Id: Ic965376ee4dd1f3ce09be7cee780f0282a5a0d38
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>