Examine source code of Starplus Auto

{
  "manifest_version": 2,
  "name": "Starplus Auto",
  "version": "2.1",
  "description": "Automatically click the Continue, Play and Skip buttons os Starplus",
  "icons": {
    "48": "desativado.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs",
    "<all_urls>",
    "activeTab",
    "storage",
    "webNavigation",
    "webRequest",
    "webRequestBlocking"
  ],
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Ativar/desativar script"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.starplus.com/"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{86445594-cd06-48c6-b306-f26b12b6495c}"
    }
  }
}