Examine source code of Bor et Bar

{
  "manifest_version": 2,
  "name": "Bor et Bar",
  "version": "1.0",
  "permissions": [
    "activeTab",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "borToBarEngine.js"
    ]
  },
  "browser_action": {
    "default_icon": "img/boretbar-38.png",
    "default_title": "Bookmark it!",
    "default_popup": "menu.html"
  }
}