Merge "Base "seen" logic on shade expansion and heads up" into tm-qpr-dev am: 156fdcab

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21322087



Change-Id: I34a866c5639e860fd498a455599ec44890e80b69
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>