chrome/services/removable_storage_writer/manifest.json

{
  "name": "removable_storage_writer",
  "display_name": "Removable Storage Writer",
  "sandbox_type": "none_and_elevated",
  "options" : {
    "instance_sharing" : "shared_instance_across_users"
  },
  "interface_provider_specs": {
    "service_manager:connector": {
      "provides": {
        "removable_storage_writer": [ "chrome.mojom.RemovableStorageWriter" ]
       }
     }
  }
}