Do A Barrel Roll

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "_creds_": "This extension was created by Audio Extensions LLC, based upon 'Mlg Horns', which can be found on the chrome webstore at: https://chrome.google.com/webstore/detail/mlg-horns/doblcpfknnfkgadbemeokoblbdfkjiff",
  "name": "Do A Barrel Roll",
  "short_name": "Barrel Roll",
  "description": "Sage advice from Peppy O'Hare",
  "version": "1.1",
  "web_accessible_resources": [
    "hitmark.png"
  ],
  "browser_action": {
    "default_icon": "logo.png",
    "default_title": "Do A Barrel Roll!"
  },
  "background": {
    "scripts": [
      "audio.js"
    ],
    "persistent": false
  }
}