Examine source code of Tab Carousel

{
  "manifest_version": 2,
  "name": "Tab Carousel",
  "version": "1.0.2resigned1",
  "description": "Autoamticaly move between open tabs in 1 or more browser windows while working normally in others.",
  "homepage_url": "http://www.mnminfotech.co.uk",
  "icons": {
    "128": "icons/Tab_Carousel_128.ico"
  },
  "permissions": [
    "tabs",
    "alarms"
  ],
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "128": "icons/Tab_Carousel_128.ico"
    },
    "default_title": "Tab Carousel"
  },
  "background": {
    "scripts": [
      "go-to-next-tab.js"
    ],
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{91bf0f6a-7909-492f-b53c-bab5faf7e2d6}"
    }
  }
}