Examine source code of Musical Instruments Quiz

{
  "manifest_version": 2,
  "name": "Musical Instruments Quiz",
  "version": "1.0",
  "description": "Popup quiz to learn Vietnamese musical instrument names in English – great for music lovers and beginners!",
  "icons": {
    "48": "music_instrument_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Musical Instruments Quiz"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{02257da1-6638-40a5-856d-4ec9ac4f32f4}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}