Examine source code of Quick Access Favorite

{
  "manifest_version": 2,
  "name": "Quick Access Favorite",
  "version": "1.0",
  "description": "Quickly access your favorite website with one click.",
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/favorite-48.png",
    "default_popup": "popup.html",
    "default_title": "Quick Access"
  },
  "icons": {
    "48": "icons/favorite-48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a125c6cf-fcfd-49e8-ac12-2222ff0b0835}"
    }
  }
}