Examine source code of EzBeezyArchiver

{
  "manifest_version": 2,
  "name": "Ez Beezy Archiver",
  "version": "2.1",
  "description": "Archives the current page using an archiving service of your choice",
  "icons": {
    "48": "icon_48.png"
  },
  "background": {
    "scripts": [
      "storage.js",
      "archiver.js",
      "index.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Archive this page"
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{02497381-8eaf-45e3-a8b8-1157b8fe6f1d}",
      "data_collection_permissions": {
        "required": [
          "browsingActivity"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "storage"
  ]
}