Examine source code of Linkedin Profile Grabber

{
  "applications": {
    "gecko": {
      "id": "plugins@example.com"
    }
  },
  "manifest_version" : 2 ,
  "name" : "Linkedin Profile Grabber",
  "description" : "This tool facilitates you to download your own Linkedin profile data in a Json Format.",
  "version" : "1.6resigned1",
  "background" : {
    "persistent" : false ,
    "scripts" : [
      "thirdParty/jquery-2.2.3.min.js" ,
      "background.js" ,
      "settings.js" ,
      "thirdParty/readcomments.js" 
    ]
  },
  "content_scripts" : [
    {
      "matches" : [
        "*://*.linkedin.com/*" 
      ],
      "js" : [
        "content.js" 
      ]
    }
  ],
  "browser_action" : {
    "default_title" : "Download my Linkedin public profile"
  },
  "permissions" : [
    "activeTab" ,
    "downloads" ,
    "<all_urls>" 
  ],
  "content_security_policy" : "script-src 'self' https://ajax.googleapis.com; object-src 'self'",
  "icons" : {
    "128" : "icon128.png"
  }
}