Merge "[MS59.3] Expose NetworkStatsDataMigrationUtils" am: 853b6f6ede am: cfb860d019 am: 7cdd324483 am: 9beb86bd45

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1961599

Change-Id: Ie96aa4f519816b3c76f6f9e4dc2400070f4d326b