[automerger skipped] Add MsgTest and additional tests to...

[automerger skipped] Add MsgTest and additional tests to BluetoothMapContentObserverTest am: 0526247f -s ours am: e31a598c -s ours

am skip reason: Merged-In I3bca6240a43afed735cc84d99e9c5affd44f7880 with SHA-1 f47c0ea4 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/20792171



Change-Id: If57b1a1f72611656db68c9af75cc0ba6d1b360bb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>