Merge "Post the starting of the Notification dialog" into tm-dev am: 466dcdd6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17650398



Change-Id: I433608a5a65fe2d1260276d628c2fc4d9d56dc9b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>