[automerger skipped] [DO NOT MERGE] Make LocalCallingIdentity thread-safe am: e5e14a36e0 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/providers/MediaProvider/+/13237186

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I1d74f508c16c6561d7be43bf0a85e4ed0c991422