Merge "[pm] use list caches instead of real lists when snapshotting" into tm-qpr-dev am: 2546f800

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20339910



Change-Id: I94aa24e5b8167933f3996e880662084c584ad290
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>