Examine source code of THEHAX.PL

{
  "manifest_version": 2,
  "name": "THEHAX.PL",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "version": "1.31resigned1",
  "permissions": [
    "https://html5.haxball.com/*",
    "https://haxball.com/*",
    "http://thehax.pl/*",
    "notifications"
  ],
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_icon": "org.png",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8302de0a-1621-4659-b307-9a15977afc74}"
    }
  }
}