Revert "Revert "Revert "Revert "Revert "Revert "Changing GridMigrationTask to...

Revert "Revert "Revert "Revert "Revert "Revert "Changing GridMigrationTask to use ModelDbController directly"""""" am: 7bc6cdee

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23219852



Change-Id: Ibae285468c4c9d4f87369d782f13838e8585a75c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>