Examine source code of Linked In Auto

{
  "name": "Linked In Auto",
  "version": "5.5",
  "manifest_version": 2,
  "icons": {
    "128": "./assets/icon.png"
  },
  "description": "Linked In Auto",
  "browser_action": {
    "default_title": "Linked In Auto",
    "default_popup": "popup.html"
  },
  "permissions": [
    "https://linkedinauto.onelogicsoft.com/*",
    "http://www.linkedin.com/*",
    "https://www.linkedin.com/*",
    "http://linkedin.com/*",
    "https://linkedin.com/*",
    "https://www.xing.com/*",
    "tabs",
    "activeTab",
    "storage",
    "identity"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "slava.chernysh@gmail.com",
      "strict_min_version": "58.0"
    }
  }
}