src/build/config/fuchsia/test/font_capabilities.test-cmx

{
  "facets": {
    "fuchsia.test": {
      "injected-services": {
        "fuchsia.fonts.Provider": "fuchsia-pkg://fuchsia.com/fonts#meta/fonts.cmx",
      }
    }
  },
  "sandbox": {
    "services": [
      "fuchsia.fonts.Provider"
    ]
  }
}