Merge "Apply/remove overrides for a package when it's added/changed/removed."...

Merge "Apply/remove overrides for a package when it's added/changed/removed." into sc-v2-dev am: 8b74bdca am: 4c31b2fa

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15235800

Change-Id: I792cf27715e204c5678d21e3bf3421f54972df3a