Merge "Remove bottom corner radius from notification scrim" into udc-dev am: bb1baef8 am: 0bfa6c4a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23699435



Change-Id: Iac5a32415e4c730bffb934fb95293d4e5d663710
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>