Merge "ActivityManager: kill frozen processes receiving sync transactions" into rvc-qpr-dev am: acd04189d9 am: 00523e6c27

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12568351

Change-Id: Ic904787a426b3ebf10f037544aa8a706529b3ab9