* No need to call updateState() in onPreferenceChange()
Bug: 274326713
Test: make RunSettingsRoboTests ROBOTEST_FILTER="(AccessibilityButtonGesturePreferenceControllerTest|CaptioningLocalePreferenceControllerTest|CaptioningFontSizeControllerTest|CaptioningTypefaceControllerTest|AccessibilityButtonLocationPreferenceControllerTest|FloatingMenuSizePreferenceControllerTest|SelectLongPressTimeoutPreferenceControllerTest)"
Change-Id: I14a87597a44c5500ff7e676664b67feb9c352494
If it's grey out, users don't have the alternative way in that page to enable it. According to the UX design, we should hide it if it is needed.
Bug: 186776534
Test: make RunSettingsRoboTests -j52 ROBOTEST_FILTER=AccessibilityButtonLocationPreferenceControllerTest
Change-Id: If2f659da32345938e2930fde42365cd796571068