Examine source code of Quick URLs Launcher

{
  "manifest_version": 2,
  "name": "Quick URL launcher",
  "version": "1.1.0",
  "description": "Chrome extension to quick launch a custom list of urls simultaneously",
  "permissions": [
    "tabs",
    "<all_urls>",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "popup.js"
      ]
    }
  ],
  "browser_action": {
    "default_title": "Quick URL launcher",
    "default_popup": "quick.html",
    "default_icon": {
      "48": "icons/icon48.png"
    }
  },
  "icons": {
    "48": "icons/icon48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d8b40e85-bc6e-453e-ac6b-00dda7939e13}"
    }
  }
}