Examine source code of Gemini Watermark Remover

{
  "manifest_version": 2,
  "name": "Gemini Watermark Remover",
  "description": "Download Gemini AI generated images without watermark.",
  "version": "0.0.2",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "64": "icons/64.png",
    "128": "icons/128.png"
  },
  "web_accessible_resources": [
    "fetch-interceptor.js"
  ],
  "offline_enabled": true,
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "gemini-watermark-remover@muzammil.work"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://business.gemini.google/*",
        "https://gemini.google.com/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "permissions": [
    "https://gemini.google.com/*",
    "https://business.gemini.google/*",
    "https://*.googleusercontent.com/*",
    "https://googleusercontent.com/*",
    "https://*.google.com/*"
  ]
}