Merge "Limit the size of NotificationChannel and NotificationChannelGroup" into rvc-qpr-dev am: a15093de05 am: 5415ede546 am: dc9fe11d8d am: eb814b0f25 am: b94d473e5e am: 3f8a9b6d14

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19696124

Change-Id: I34173eb4b91fdb4e2d92cbee636d92f687d71a70
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>