Examine source code of Workees

{
  "manifest_version": 2,
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "tabs",
    "storage",
    "notifications",
    "webNavigation",
    "webRequest",
    "http://*/*",
    "https://*/*"
  ],
  "browser_action": {
    "default_icon": {
      "16": "images/icon16.png",
      "38": "images/icon38.png"
    },
    "default_popup": "popup.html",
    "default_title": "Workees"
  },
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "64": "images/icon64.png",
    "128": "images/icon128.png"
  },
  "name": "Workees",
  "description": "Расширение для работы в Workees.ru",
  "version": "1.0.3resigned1",
  "browser_specific_settings": {
    "gecko": {
      "id": "{9cdf6c8a-24ed-43a5-ae50-04839216966f}"
    }
  }
}