Scanned prefs that we currently index and added screen title if the root
node didn't have any.
Bug: 32936784
Test: reindex db and verify through sqlite3.
Change-Id: Iafdff982e04bd45c8666bfdd01d312f5979f9681
- Refactor GesturePreference to a generic VideoPreference.
- The old video_preference.xml is only for magnification video, so
renamed.
- And use VideoPreference in gesture setting pages.
- Refactor common logic into GesturePreferenceController.
Bug: 32637613
Test: RunSettingsRoboTests
Change-Id: I58580b01a32873cb32c5dc5bf2ec021d5b1400cc