Examine source code of Basecamp Bookmark Editor

{
  "name": "Basecamp Bookmark Editor",
  "description": "Mass editor for bookmarks.",
  "version": "0.0.5resigned1",
  "permissions": [
    "bookmarks"
  ],
  "browser_action": {
    "default_title": "Basecamp Bookmark Editor",
    "default_icon": "images/basecamp.png",
    "default_popup": "options/mybookmarks.html"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{c2bb4f03-403c-4781-87a5-e7e46e06fc15}"
    }
  }
}