Examine source code of Auto Pause on Switch

{
  "manifest_version": 2,
  "name": "Auto Pause on Switch",
  "version": "1.0",
  "description": "Automatically pause videos when you switch to another tab.",
  "permissions": [
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{67d388ad-7cb4-4125-a24c-3bf908f4a9d8}",
      "strict_min_version": "118.0"
    }
  }
}