Examine source code of RADAR Extension

{
  "manifest_version": 2,
  "name": "RADAR Extension",
  "description": "RADAR Extension",
  "version": "1.52",
  "icons": {
    "48": "icons/logo_48.png",
    "64": "icons/logo_64.png",
    "96": "icons/logo_96.png",
    "128": "icons/logo_128.png"
  },
  "permissions": [
    "clipboardWrite",
    "contextMenus",
    "menus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{139c21db-fb99-40b8-be30-6f2a4b03b735}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}