Merge "Consider process priority of unknown visibility launching app" into...

Merge "Consider process priority of unknown visibility launching app" into sc-v2-dev am: a65ac3c3 am: 1988aa8a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15782925

Change-Id: I047cdb73fcb863ed5d392fc6874a3babd081f3a5