Merge "Ensure user can only share documents from allowed users." into rvc-dev...
Merge "Ensure user can only share documents from allowed users." into rvc-dev am: b89e9a7a am: f9e95a6e am: f6b005a0
Change-Id: I04b96f51f3fa0cb02a8ac68cd2b3c3189bc7ddcb