Examine source code of BookmarkRandomizer

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "homepage_url": "http://localhost:8080/",
  "description": "Bookmark Randomizer",
  "default_locale": "en",
  "permissions": [
    "activeTab",
    "<all_urls>",
    "*://*/*",
    "bookmarks",
    "notifications"
  ],
  "icons": {
    "16": "icons/bookmark.png",
    "48": "icons/bookmark.png",
    "128": "icons/bookmark.png"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "__MSG_extName__",
    "default_icon": {
      "19": "icons/bookmark.png",
      "38": "icons/bookmark.png"
    }
  },
  "version": "0.1.0",
  "content_security_policy": "script-src 'self' ; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{9fe758a1-2692-45ee-92e4-05f7e9a17c0c}"
    }
  }
}