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

Revert "Revert "Revert "Revert "Revert "Revert "Changing GridMigrationTask to use ModelDbController directly"""""" am: 7bc6cdee am: e4e7a650

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



Change-Id: I183c8bb6dd35414a9ed32ec2705cba59e479ed9f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>