Examine source code of Aaron's Tab Rotator

{
  "manifest_version": 2,
  "name": "Aaron's Tab Rotator",
  "version": "1.1",
  "description": "Automatically rotate through tabs with customizable timing",
  "browser_specific_settings": {
    "gecko": {
      "id": "{33d4e894-c710-48aa-89a3-8a561776fd5f}",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon-disabled-16.png",
      "32": "icon-disabled-32.png",
      "48": "icon-disabled-48.png",
      "128": "icon-disabled-128.png"
    }
  },
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  }
}