Examine source code of leaflike

{
  "manifest_version": 2,
  "name": "leaflike",
  "version": "1.1resigned1",
  "description": "Extension for leaflike bookmarking tool",
  "icons": {
    "48": "icons/48.png"
  },
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/48.png",
    "default_title": "leaflike",
    "default_popup": "popup/add_bookmark.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0f014568-1092-4772-a3ea-fdb7abe3d41b}"
    }
  }
}