Merge "Add OWNERS block for migration" am: 3dcbcae839 am: ff4dd6912d am: 4b0c629932 am: d4e37ded44

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1715476

Change-Id: Id46109aba233c39838905752e04fecf556acf267