Merge "Add transient notification views of group children to the child...

Merge "Add transient notification views of group children to the child container, not directly to the row." into udc-dev am: b519cb5f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21538354



Change-Id: I3106839602f418dbddbf32370f1b21fa2237bab8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>