In the current design PersonalDataManager contains a private helper class (PersonalDataHelper) that maintains the (persistent) profile and (ephemeral) account database, and can switch from using one to the other.

Furthermore, PersonalDataManager provides 2 pieces of Sync-related data to the rest of the payments feature code:
Whether we’re in Full sync mode (sync the feature is on) or not.
The current syncing account.

We will move this functionality from PersonalDataManager to a specific AutofillSyncState class. This class will replace both AccountInfoGetter and PersonalDataHelper.