chromium/chrome/test/data/extensions/api_test/window_open/opener/manifest.json

{
  "name": "chrome.windows.create() and window.opener behavior",
  "version": "0.1",
  "manifest_version": 2,
  "description": "Tests the window.opener property can be preserved with certain combinations of chrome.windows.create and window.open.",
  "background": {
    "page": "test.html"
  },
  "permissions": ["tabs"]
}