Examine source code of Hide Tabs

{
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "hide-tabs@afnankhan",
      "strict_min_version": "59.0a1"
    }
  },
  "name": "Hide Tabs",
  "version": "2018.1.22resigned1",
  "icons": {
    "64": "images/icon.svg"
  },
  "browser_action": {
    "default_title": "Test",
    "default_icon": "images/icon.svg",
    "default_popup": "html/popup.html",
    "browser_style": true
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "menus",
    "tabs",
    "tabHide",
    "storage"
  ]
}