Timer

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Timer",
  "version": "2.4",
  "description": "Notify you when time's up!",
  "manifest_version": 2,
  "permissions": [
    "tabs",
    "<all_urls>",
    "notifications",
    "background"
  ],
  "browser_action": {
    "default_icon": {
      "19": "icon.png",
      "38": "icon.png"
    },
    "default_popup": "options.html"
  },
  "background": {
    "scripts": [
      "timer.js",
      "jQuery.js"
    ]
  },
  "options_page": "options.html",
  "icons": {
    "16": "icon.png",
    "19": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "web_accessible_resources": [
    "icon.png"
  ]
}