Examine source code of Kompas Banner Remover

{
  "manifest_version": 2,
  "name": "Kompas Banner Remover",
  "version": "1.0",
  "description": "Remove annoying kompas site banner.",
  "icons": {
    "48": "remover.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://kompas.id/*"
      ],
      "js": [
        "remover.js"
      ]
    }
  ]
}