manifest.json

{
  "name": "Temporary Bookmarks",
  "version": "1.3",
  "description": "Automatically delete expired bookmarks in a folder.",
  "icons": {
    "128": "icons/icon-128.png",
    "48": "icons/icon-48.png",
    "19": "icons/icon-19.png",
    "16": "icons/icon-16.png"
  },
  "permissions": ["<all_urls>", "bookmarks", "tabs", "storage"],
  "options_ui": {
    "chrome_style": true,
    "open_in_tab": true,
    "page": "index.html"
  },
  "browser_action": {
    "default_icon": "icons/icon-19.png",
    "default_title": "temporary bookmarks"
  },
  "background": {
    "scripts": ["js/bookmarks.js", "js/background.js"]
  },
  "commands": {
    "add-bookmark": {
      "description": "Add bookmarks to the folder"
    }
  },
  "manifest_version": 2
}