src/fonts/meta/fonts.cmx

{
    "program": {
        "binary": "bin/font_provider"
    },
    "sandbox": {
        "features": [
            "config-data"
        ],
        "services": [
            "fuchsia.logger.LogSink",
            "fuchsia.pkg.FontResolver",
            "fuchsia.tracing.provider.Registry"
        ]
    }
}