Initialize and migrate 26 keys that are backed by

PrepreferencesProperties.

The detailed migration of each key can be found in
https://docs.google.com/spreadsheets/d/1kDmMrrFjin0nEtvBPpWEq8-c0rgk_SK0HHyqDb0LQD8/edit#gid=0.
Keys backed by other types of SettingsProperties will be migrated later
in separate CLs.

Bug: 164398026, 177355163
Test: manual test
Change-Id: Ib9786cca9230af41d504862ac4eb5ceed28e52eb