Examine source code of Incognito Google Search

{
  "manifest_version": 2,
  "name": "Incognito Google Search",
  "version": "1.0",
  "description": "Search selected text in Google using a private window.",
  "permissions": [
    "contextMenus",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "incognito": "spanning",
  "icons": {
    "16": "icons/icon-16.webp",
    "32": "icons/icon-32.webp",
    "128": "icons/icon-128.webp"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "incognito-google-search@example.com",
      "data_collection_permissions": {
        "collects_data": false,
        "required": [
          "none"
        ]
      }
    }
  }
}