Examine source code of AtosSecure

{
  "manifest_version": 2,
  "name": "AtosSecure",
  "version": "1.0",
  "description": "AtosSecure – Scan web security headers",
  "permissions": [
    "tabs",
    "activeTab",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_title": "AtosSecure",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a9231159-ec0a-4f0d-912f-2941af78d596}"
    }
  }
}