Merge "Validate pid can be trusted" into sc-dev am: 45312b83 am: b14e524f am: e38b4d59

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16461958

Change-Id: I7e25a255f30ed7c9824bc5629814f7f5076f025d