Examine source code of Auto Scroll to Top

{
  "manifest_version": 2,
  "name": "Auto Scroll to Top",
  "version": "1.0",
  "description": "Automatically scroll to the top of the page.",
  "permissions": [
    "activeTab",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7a835338-7013-49d5-ae65-273419a4b588}"
    }
  }
}