content/public/app/mojo/content_packaged_services_manifest.json

// Primordial service for the browser process. This is a singleton service which
// acts as a runtime ServiceFactory for other packaged global services exposed
// at or below the content layer.
//
// Note that this is only for packaging services which do not require user
// profile context. Services which require user profile context must instead be
// packaged within the content_browser service.
{
  "name": "content_packaged_services",
  "display_name": "Content Packaged Services",
  "interface_provider_specs": {
    "service_manager:connector": {
      "provides": {
        "service_manager:service_factory": [
          "service_manager.mojom.ServiceFactory"
        ]
      },
      "requires": {
        "*": [ "app" ],
        "content_browser": [],
        "service_manager": [
          "service_manager:client_process",
          "service_manager:singleton",
          "service_manager:user_id"
        ]
      }
    }
  }
}