Examine source code of ModifyWbgdrb.in

{
  "manifest_version": 2,
  "name": "ModifyWbgdrb.in",
  "version": "1.1.2resigned1",
  "description": "Add Links to wbgdrb",
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "*://*.wbgdrb.in/*"
      ]
    }
  ],
  "author": "Parvin",
  "browser_specific_settings": {
    "gecko": {
      "id": "{fcd625b8-7010-4657-a944-ead84b75f5b0}"
    }
  }
}