Merge "Delete a blob after the last lease of it is released." into rvc-dev am:...
Merge "Delete a blob after the last lease of it is released." into rvc-dev am: 0c0abbf7 am: 04de4706 am: 753f4f77 am: e8d88c38
Change-Id: I24dc8124c2bf871c199d2d1f58e5621fc9d9f0d6