Examine source code of Tab Reloaderx

{
  "manifest_version": 2,
  "name": "Tab Reloader",
  "version": "1.0",
  "description": "Automatically reloads the current tab at a specified interval.",
  "permissions": [
    "tabs",
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c8b015b0-0e09-4067-b953-34fb389b3663}"
    }
  }
}