Merge "Adds dump method to ModelDelegate." into sc-dev am: 023657ec21

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13711538

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I6822bc3d654bc11bdd7d298819eb69c5fa7da864