Examine source code of AETMaster - Trechos DNIT

{
  "name": "AETMaster - Automação de Trechos no DNIT",
  "short_name": "AETMaster",
  "description": "Extensão do sistema AETMaster para automatizar o preenchimento de trechos autorizados no portal do DNIT.",
  "version": "3.0",
  "permissions": [
    "storage",
    "https://*.aetmaster.com.br/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://siaet.dnit.gov.br/*"
      ],
      "js": [
        "browser-bridge.chromium.js",
        "browser-bridge.firefox.js",
        "browser-bridge.js",
        "logger.js",
        "utils.js",
        "aet-config.js",
        "qrcode-vendor.js",
        "aet-creditos.js",
        "aet-api.js",
        "aet-ui.js",
        "aet-flow.js",
        "contentScript.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "icon-light.png",
    "logo-sm-light.png"
  ],
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon.png"
  },
  "homepage_url": "https://www.aetmaster.com.br",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{b2b9e2e2-e17b-4d31-adf1-c09c2adb27f5}"
    }
  }
}