Merge "Notify dispatcher when its configuration needs to be updated" into udc-dev am: cb0109ed

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22760950



Change-Id: I99b9cf4994f7f3ad2f803790488919edf73a21ef
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>