Examine source code of AAWP

{
  "manifest_version": 2,
  "name": "__MSG_extension_name__",
  "short_name": "AAWP",
  "description": "__MSG_extension_description__",
  "version": "1.0.0",
  "default_locale": "en",
  "icons": {
    "16": "/images/icons/16.png",
    "24": "/images/icons/24.png",
    "32": "/images/icons/32.png",
    "48": "/images/icons/48.png",
    "64": "/images/icons/64.png",
    "128": "/images/icons/128.png"
  },
  "permissions": [
    "webRequest",
    "activeTab",
    "tabs",
    "notifications",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "/js/utils.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.amzn.com/*",
        "*://*.amazon.com/*",
        "*://*.amazon.co.uk/*",
        "*://*.amazon.de/*",
        "*://*.amazon.cn/*",
        "*://*.amazon.it/*",
        "*://*.amazon.es/*",
        "*://*.amazon.co.jp/*",
        "*://*.amazon.ca/*",
        "*://*.amazon.fr/*",
        "*://*.amazon.in/*",
        "*://*.amazon.com.mx/*",
        "*://*.amazon.com.br/*",
        "*://*.amazon.com.au/*",
        "*://*.amazon.com.tr/*",
        "*://*.amazon.ae/*",
        "*://*.amazon.nl/*",
        "*://*.amazon.sa/*",
        "*://*.amazon.sg/*"
      ],
      "js": [
        "/js/utils.js",
        "/js/content.js"
      ],
      "css": [
        "/css/style.css"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "/images/icons/32_disabled.png",
    "default_title": "__MSG_extension_name__",
    "default_popup": "/html/disabled.html"
  },
  "page_action": {
    "default_icon": "/images/icons/32_disabled.png",
    "default_title": "__MSG_extension_name__",
    "default_popup": "/html/disabled.html"
  }
}