chromium/chrome/test/data/extensions/api_test/dom/closed_shadow_root_from_content_script/manifest.json

{
  "name": "chrome.dom shadow root test",
  "version": "0.1",
  "manifest_version": 2,
  "description": "tests that a content script from an extension can access the closed shadow root via chrome.dom",
  "content_scripts": [
    {
      "matches": ["http://127.0.0.1/*"],
      "js": ["content-script.js"]
    }
  ]
}