SwitchPreference and SwitchPreferenceCompat are both TwoStatePreference.
Using TwoStatePreference in Java will helps migration in the future.
Bug: 306771414
Test: manual - check Settings pages
Change-Id: I84e1d7b09451106797c2b23d127855c6976678ca
* Opacity preference will be disabled when fade is disabled
Bug: 173940869
Test: atest AccessibilityButtonFadePreferenceControllerTest AccessibilityButtonOactiyPreferenceControllerTest
Change-Id: I1efd9760aa0287899cddd10ddd9a88a81ccc39ba