Merge "Lock accesses to mClazz in AIBinder with a mutex" am: 11c276ec69 am: bc0eef555d am: 277a7c4396 am: 2fb940cbf1

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1433074

Change-Id: I128467d085842037fed051a174e9e55bc8e8b787