30481342: Security Vulnerability - TOCTOU in MmsProvider allows access to files as phone (radio) uid - DO NOT MERGE am: 8ce0cad150  -s ours am: c4cded1767 am: ba689bea2f
am: e3615f85c6  -s ours

Change-Id: Ida0e20985c5f674a9fc4c202ed28915cecac4079