Throbber

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Throbber",
  "description": "A vintage user interface element for your modern browser.",
  "version": "0.2",
  "author": "Wilson",
  "options_page": "options.html",
  "options_ui": {
    "page": "options.html",
    "chrome_style": true
  },
  "browser_action": {
    "default_icon": "img/mozillic1/icon1.png"
  },
  "permissions": [
    "storage"
  ],
  "incognito": "spanning",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "img/icon_16.png",
    "48": "img/icon_48.png",
    "128": "img/icon_128.png"
  }
}