Merge "Moved panel expansion classes to shade package" into tm-qpr-dev am: ed10f73b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20008272



Change-Id: I7f28da31471a5aeab854a46f8873dad97073282e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>