Examine source code of Méliuz: Cashback e cupons em suas compras

{
  "name": "Méliuz: Cashback e cupons em suas compras",
  "description": "Ganhe cashback e ative cupons de desconto nas suas lojas favoritas!",
  "version": "11.0.3",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "icons": {
    "16": "images/icons/icon-default-16.png",
    "19": "images/icons/icon-default-19.png",
    "32": "images/icons/icon-default-32.png",
    "38": "images/icons/icon-default-38.png",
    "128": "images/icons/icon-web-store.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "images/icons/icon-default-16.png",
      "19": "images/icons/icon-default-19.png",
      "32": "images/icons/icon-default-32.png",
      "38": "images/icons/icon-default-38.png"
    },
    "default_title": "Méliuz",
    "default_popup": "popup/popup.html"
  },
  "permissions": [
    "alarms",
    "tabs",
    "cookies",
    "activeTab",
    "<all_urls>",
    "storage"
  ],
  "web_accessible_resources": [
    "images/*",
    "content-scripts/*",
    "fonts/*"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "css": [
        "content-scripts/fonts-loader/loader.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "jid1-NI2sWc3cvsAJsg@jetpack"
    }
  }
}