Merge "Split MOUNT_FLAG_VISIBLE into MOUNT_FLAG_VISIBLE_FOR_{READ, WRITE}" am: b6f19328d5 am: 5dc7e50d24

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1891615

Change-Id: I35f53119fcc0daf2dd112191b40460aa16218939