Examine source code of ProxyAuth Extension

{
  "manifest_version": 2,
  "name": "ProxyAuth Extension",
  "version": "1.4",
  "description": "Extension de signature sécurisée pour ProxyAuth",
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true,
    "open_in_tab": true
  },
  "browser_action": {
    "default_title": "ProxyAuth",
    "default_icon": "icons/icon-48.png",
    "default_popup": "options.html"
  },
  "web_accessible_resources": [],
  "content_security_policy": "script-src 'self'; object-src 'none'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{b31da4c9-c37c-4987-8342-6f141034977c}",
      "strict_min_version": "91.0"
    }
  }
}