Walkway

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Walkway",
  "version": "3.15",
  "description": "Gorgeous photographs from some of the best photographers of El Salvador in every new tab!",
  "short_name": "Walkway",
  "background": {
    "persistent": true,
    "scripts": [
      "scripts/background/jquery.min.js",
      "assets/background-377d6253.js"
    ]
  },
  "icons": {
    "16": "images/icon-main-16.png",
    "48": "images/icon-main-48.png",
    "128": "images/icon-main-128.png"
  },
  "chrome_url_overrides": {
    "newtab": "pages/newtab.html"
  },
  "browser_action": {
    "default_icon": "images/icon-main-16.png"
  },
  "permissions": [
    "alarms",
    "storage"
  ],
  "content_security_policy": "script-src 'self' https://maps.googleapis.com https://maps.gstatic.com; object-src 'self'"
}