Merge "Hold mMutex lock and check abandoned when accessing mLayer" into rvc-dev am: a38a3e14 am: 648ba9f5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/11617155

Change-Id: I7a9a7aa91f46c5279c002b8f45fd8c0121dca816