Examine source code of PrivateBookmark

{
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "{a37678e2-6781-4f81-ba07-bf711cb608c0}"
    }
  },
  "name": "PrivateBookmark",
  "version": "1.9resigned1",
  "author": "Lukasz Kwiatkowski",
  "incognito": "spanning",
  "description": "Opens bookmark marked as private in a new private tab.",
  "icons": {
    "76": "icons/private-bookmark.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options/options.html"
  },
  "permissions": [
    "<all_urls>",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "bookmarks",
    "storage"
  ]
}