chrome/browser/resources/hangout_services/manifest.json

{
  // Extension ID: nkeimhogjdpnpccoofpliimaahmaaome
  "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDAQt2ZDdPfoSe/JI6ID5bgLHRCnCu9T36aYczmhw/tnv6QZB2I6WnOCMZXJZlRdqWc7w9jo4BWhYS50Vb4weMfh/I0On7VcRwJUgfAxW2cHB+EkmtI1v4v/OU24OqIa1Nmv9uRVeX0GjhQukdLNhAE6ACWooaf5kqKlCeK+1GOkQIDAQAB",

  "name": "Hangout Services",
  "version": "1.0",
  "manifest_version": 2,
  "externally_connectable": {
    "matches": [
      "https://*.google.com/hangouts*",
      // For tests.
      "*://localhost/*"
    ]
  },
  "background": {
    "page": "background.html",
    "persistent": false
  },
  "permissions": [
    "alarms",
    "desktopCapture",
    "system.cpu",
    "webrtcAudioPrivate",
    "webrtcLoggingPrivate"
  ]
}