settings/accessibility/meta/accessibility_settings.cmx

{
    "program": {
        "data": "data/accessibility_settings"
    },
    "sandbox": {
        "services": [
            "fuchsia.fonts.Provider",
            "fuchsia.sys.Environment",
            "fuchsia.ui.input.ImeService",
            "fuchsia.ui.scenic.Scenic"
        ]
    }
}