chromium/chrome/test/data/extensions/api_test/service_worker/messaging/send_message_tab_to_worker_one_way/manifest.json

{
  "name": "runtime.sendMessage from content script to SW extension",
  "version": "0.1",
  "manifest_version": 2,
  "description": "service worker",
  "content_scripts": [{
    "matches": ["*://*/*"],
    "js": ["content_script.js"]
  }],
  "background": {"service_worker": "service_worker_background.js"}
}