Examine source code of WiKifuKiller(Wi寄付キラー)

{
  "manifest_version": 2,
  "name": "WiKifuKiller",
  "version": "1.0.0",
  "description": "Wikipediaの寄付依頼をブロックします。",
  "icons": {
    "48": "icons/wikifukiller-48.png",
    "96": "icons/wikifukiller-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.wikipedia.org/*"
      ],
      "js": [
        "wikifukiller.js"
      ]
    }
  ]
}