Examine source code of Kant - Maximize

{
  "manifest_version": 2,
  "name": "Maximize",
  "version": "1.8",
  "description": "Maximizes the window on startup",
  "icons": {
    "192": "icons/icon-192.png"
  },
  "background": {
    "scripts": [
      "maximize.js"
    ]
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e7f30c9f-5eb9-40e4-adc9-63e4f079eaab}"
    }
  }
}