Anti-Sedentary Desktop Reminder

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Anti-Sedentary Desktop Reminder",
  "version": "0.9",
  "manifest_version": 2,
  "description": "This extension will make your life better. How? By disrupting you when you sit idle for too long at the screen.",
  "browser_action": {
    "default_icon": "images/sitting.png",
    "default_title": "Get Up",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_security_policy": "script-src 'self' https://www.google.com; object-src 'self'",
  "icons": {
    "128": "images/man41.png"
  },
  "permissions": [
    "alarms",
    "notifications",
    "storage",
    "background"
  ]
}