Examine source code of Auto

{
  "manifest_version": 2,
  "name": "Auto Resume for YouTube & Netflix",
  "version": "1.0",
  "description": "Automatically clicks 'Are you still there?' buttons on YouTube and Netflix.",
  "permissions": [
    "tabs",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "youtube.js"
      ]
    },
    {
      "matches": [
        "*://www.netflix.com/*"
      ],
      "js": [
        "netflix.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a48d8333-0293-4a19-861f-b1a309c68a9a}"
    }
  }
}