Examine source code of Amazon Question Tool

{
  "manifest_version": 2,
  "name": "Amazon Question Tool",
  "description": "",
  "version": "1.1.1",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "maxyou2090@gmail.com"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.amazon.ae/*/dp/*",
        "*://*.amazon.ae/*/gp/*",
        "*://*.amazon.ae/dp/*",
        "*://*.amazon.ae/gp/*",
        "*://*.amazon.ca/*/dp/*",
        "*://*.amazon.ca/*/gp/*",
        "*://*.amazon.ca/dp/*",
        "*://*.amazon.ca/gp/*",
        "*://*.amazon.co.jp/*/dp/*",
        "*://*.amazon.co.jp/*/gp/*",
        "*://*.amazon.co.jp/dp/*",
        "*://*.amazon.co.jp/gp/*",
        "*://*.amazon.co.uk/*/dp/*",
        "*://*.amazon.co.uk/*/gp/*",
        "*://*.amazon.co.uk/dp/*",
        "*://*.amazon.co.uk/gp/*",
        "*://*.amazon.com.au/*/dp/*",
        "*://*.amazon.com.au/*/gp/*",
        "*://*.amazon.com.au/dp/*",
        "*://*.amazon.com.au/gp/*",
        "*://*.amazon.com.br/*/dp/*",
        "*://*.amazon.com.br/*/gp/*",
        "*://*.amazon.com.br/dp/*",
        "*://*.amazon.com.br/gp/*",
        "*://*.amazon.com.mx/*/dp/*",
        "*://*.amazon.com.mx/*/gp/*",
        "*://*.amazon.com.mx/dp/*",
        "*://*.amazon.com.mx/gp/*",
        "*://*.amazon.com/*/dp/*",
        "*://*.amazon.com/*/gp/*",
        "*://*.amazon.com/dp/*",
        "*://*.amazon.com/gp/*",
        "*://*.amazon.de/*/dp/*",
        "*://*.amazon.de/*/gp/*",
        "*://*.amazon.de/dp/*",
        "*://*.amazon.de/gp/*",
        "*://*.amazon.es/*/dp/*",
        "*://*.amazon.es/*/gp/*",
        "*://*.amazon.es/dp/*",
        "*://*.amazon.es/gp/*",
        "*://*.amazon.fr/*/dp/*",
        "*://*.amazon.fr/*/gp/*",
        "*://*.amazon.fr/dp/*",
        "*://*.amazon.fr/gp/*",
        "*://*.amazon.in/*/dp/*",
        "*://*.amazon.in/*/gp/*",
        "*://*.amazon.in/dp/*",
        "*://*.amazon.in/gp/*",
        "*://*.amazon.it/*/dp/*",
        "*://*.amazon.it/*/gp/*",
        "*://*.amazon.it/dp/*",
        "*://*.amazon.it/gp/*",
        "*://*.amazon.nl/*/dp/*",
        "*://*.amazon.nl/*/gp/*",
        "*://*.amazon.nl/dp/*",
        "*://*.amazon.nl/gp/*",
        "*://*.amazon.sa/*/dp/*",
        "*://*.amazon.sa/*/gp/*",
        "*://*.amazon.sa/dp/*",
        "*://*.amazon.sa/gp/*",
        "*://*.amazon.se/*/dp/*",
        "*://*.amazon.se/*/gp/*",
        "*://*.amazon.se/dp/*",
        "*://*.amazon.se/gp/*",
        "*://*.amazon.sg/*/dp/*",
        "*://*.amazon.sg/*/gp/*",
        "*://*.amazon.sg/dp/*",
        "*://*.amazon.sg/gp/*"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}