Change the keys in the Language and Input screen for the
gesture and tts-output settings so they can be disabled
in search. Then change the preference controllers to take
a key as input to avoid crashes on the other screens with
these settings.
Merge for: ag/2098173/
Test: make RunSettingsRoboTests
Bug: 33701673
Change-Id: I8bc0776131fcac5a6edf7e8271bc53252c2fc719
Bug: 32642706
Bug: 32637613
Bug: 32643833
Test: RunSettingsRoboTests
This change is necessary to test preference controlling logic, as well
as making preferences reusable in other Preference pages in the new
information architecture.
Change-Id: I9e2fd2f6800579f005a5c303ed03ae06477006a6
