Examine source code of Friend

{
  "manifest_version": 2,
  "name": "Friend",
  "version": "6.9",
  "description": "obama",
  "icons": {
    "48": "obama.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "obama.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "friend@fwfy.club"
    }
  }
}