Examine source code of Remove jvc player

{
  "manifest_version": 2,
  "name": "Remove jvc player",
  "version": "1.0",
  "description": "Remove jvc spam video player ",
  "icons": {
    "48": "icons/logo.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.jeuxvideo.com/*"
      ],
      "js": [
        "removePlayer.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9d90ffaf-6ec5-4f5f-bac8-aac480a52112}"
    }
  }
}