Sudheer Shanka 523643c45c Allow certain apps to access blobs across users.
BlobStoreManagerService is updated to store only
one copy of any blob on device and to allow apps
with new ACCESS_BLOBS_ACROSS_USERS priv permission
to access blobs commited by their instances on other
users.

Bug: 175844032
Test: atest --test-mapping apex/blobstore
Change-Id: If6d10d90b17bde33baf9e83eeaae75d09d0b50ae
2021-04-12 16:00:43 -07:00
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