Root cause: Portrait mode does not always respect the sw600dp qualifier and instead uses the phone (default) resources.
Solution: Using the product to customize the tablet and phone cases is better way than using the configuration qualifier.
Bug: 269130587
Test: Manual testing
Change-Id: I90cc44f1e9bccf8950a4d89f70119ba5e3c0bfdc
(cherry-pick of commit bea25c7513)
1. Add gesture preference controller for gesture navigation
2. Auto update the preview illustarion when screen reader is on
3. Auto update accessibility button title for system navigation
Bug: 190563948
Test: make RunSettingsRoboTests ROBOTEST_FILTER=AccessibilityButtonGesturePreferenceControllerTest ROBOTEST_FILTER=AccessibilityButtonPreviewPreferenceControllerTest ROBOTEST_FILTER=AccessibilityLayerDrawableTest ROBOTEST_FILTER=AccessibilityPreferenceControllerTest ROBOTEST_FILTER=AccessibilityButtonFooterPreferenceControllerTest
Change-Id: Ifa98fc029430d86d3143133b3203b239340f2e41