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: 88e9b132

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



Change-Id: Icbbf034e43cb4bbbb30375a0a5bc311e43bc4cbc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>