src/third_party/devtools/front_end/formatter_worker.json

{
  "worker": true,
  "modules": [
    { "name": "platform", "type": "autostart" },
    { "name": "text_utils", "type": "autostart" },
    { "name": "cm_headless", "type": "autostart" },
    { "name": "cm_web_modes", "type": "autostart" },
    { "name": "formatter_worker", "type": "autostart" }
  ]
}