30481342: Security Vulnerability - TOCTOU in MmsProvider allows access to files as phone (radio) uid - DO NOT MERGE am: 53ff7691e0 am: 20903846d5 am: 37e2a4dca9  -s ours am: 8c659fb296 am: 916c01a5f9 am: d379a7958f am: f393a8dd36  -s ours am: 412f2f6089 am: fe2d54533c am: 94b793ebb0
am: 939c177324

Change-Id: I321fdadb64cdd5a711777ebf79f887fb47aba8e4