Examine source code of AWBW Stats

{
  "name": "AWBW Stats",
  "description": "Advanced visual stats for Advance Wars By Web.",
  "version": "0.2.14",
  "manifest_version": 2,
  "icons": {
    "16": "/res/img/stats16.png",
    "32": "/res/img/stats32.png",
    "48": "/res/img/stats64.png",
    "128": "/res/img/stats128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://awbw.amarriner.com/2030.php*"
      ],
      "js": [
        "lib/chart.min.js",
        "dist/advanced_stats.js"
      ]
    }
  ],
  "host_permissions": [
    "https://awbw.amarriner.com/2030.php*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f49007e7-f07d-4e40-8c40-b3af7f8d5641}"
    }
  }
}