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: 518f6623 am: 153d47f7 am: 982d4f8f
Change-Id: I5885c936e24a302fe4ec60b03ec4a96da83a52b6