Merge "Add OWNERS file for UsageStats unit tests." am: eeb577dc44 am: df5a88ea6d am: 1881ec9386

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1614160

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I46015cb552a7e276e97c5861d0887ab7f5e97725