Examine source code of Atab

{
  "name": "Atab",
  "description": "Periodic Pull of Web Scraping",
  "version": "2.1resigned1",
  "permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js?0"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js?0"
      ]
    }
  ],
  "web_accessible_resources": [
    "main.js?0",
    "worker.js?0",
    "popup.html?0"
  ],
  "browser_action": {
    "default_icon": "default-64.png?0",
    "default_title": "Atab"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{cc6c1317-3167-4490-8e5c-e57c652be65c}"
    }
  }
}