Examine source code of PhoneFB

{
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": "images/icon16.png",
    "default_popup": "popup.html"
  },
  "options_page": "options.html",
  "content_scripts": [
    {
      "all_frames": true,
      "css": [
        "content.css"
      ],
      "js": [
        "contentScript.js"
      ],
      "matches": [
        "*://*.facebook.com/*"
      ]
    }
  ],
  "content_security_policy": "script-src 'self' https://freechat.quetface.com/ https://*.quetface.com/; object-src 'self'",
  "description": "Tiện ích hỗ trợ tìm kiếm khách hàng online",
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "manifest_version": 2,
  "name": "PhoneFB",
  "permissions": [
    "cookies",
    "tabs",
    "storage",
    "unlimitedStorage",
    "http://localhost/*",
    "https://quetface.com/*",
    "*://*.facebook.com/*"
  ],
  "version": "11.2",
  "web_accessible_resources": [
    "images/*",
    "popup.js",
    "content.css"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6171f43c-b07b-449a-9432-511f18faa191}"
    }
  }
}