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: I8f574d85e58a49e7d1a6e1248dbae4c9e2cc7839
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>