Merge "RefBase: Unknown mFlag meaning" am: 53e977339b am: e5eede1551 am: 53ae3f5a76 am: 132fe54ffc am: 70cba1bd17

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1805816

Change-Id: Id7e70dd78d84932ac5a027f761eb2cdee648bf14