Merge "Polish home-key from split to pip transition" into udc-dev am: c7a500cc am: 50e27ba9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23833763



Change-Id: Ifaf22f50fba6b60490c15b2f47c8fdfc9162337f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>