Merge "Fix NullPointerException in PhantomProcessList due to race condition"...

Merge "Fix NullPointerException in PhantomProcessList due to race condition" into sc-dev am: 8b872f5c am: 357769d6 am: 178cf6cd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15404738

Change-Id: Ib03d503194533c5919e6ffa31667172c7a019a8d