Donald Trump to the Music of 'Jaws'

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Donald Trump to the Music of 'Jaws'",
  "description": "This extension will play the theme music to Jaws each time you are reading an article written about the big shark Donald Trump",
  "version": "1.0",
  "manifest_version": 2,
  "background": {
    "page": "background.html"
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "run_at": "document_end",
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ]
}