Merge "Use String8/16 c_str [mtp]" into main am: e437e04a am: 9ddc0c48 am:...

Merge "Use String8/16 c_str [mtp]" into main am: e437e04a am: 9ddc0c48 am: 54c4e27a am: 750d3d07 am: d2ff9e16

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2717294



Change-Id: I02bd2afabea1f10865a903607b9e1be5587f8c1f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>