YouTube Popup Loop

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "__MSG_extension_name__",
  "description": "__MSG_description__",
  "version": "1.4",
  "default_locale": "en",
  "icons": {
    "16": "icon_16.png",
    "48": "icon_48.png",
    "128": "icon_128.png"
  },
  "browser_action": {
    "default_icon": "icon_19.png"
  },
  "background": {
    "scripts": [
      "js/lib/jquery-2.1.4.min.js",
      "js/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "js/lib/jquery-2.1.4.min.js",
        "js/contentscript.js"
      ]
    }
  ],
  "permissions": [
    "tabs"
  ],
  "content_security_policy": "script-src 'self' https://www.youtube.com https://s.ytimg.com; object-src 'self'"
}