Examine source code of dxeco

{
  "name": "デクセコ",
  "description": "Firefox extension for dxeco",
  "version": "0.0.55",
  "manifest_version": 2,
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "index.html"
  },
  "permissions": [
    "history",
    "storage"
  ],
  "storage": {
    "managed_schema": "managed-schema.json"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bc5f82ff-a408-4036-9308-634486c8c651}",
      "data_collection_permissions": {
        "required": [
          "browsingActivity",
          "personallyIdentifyingInfo"
        ],
        "optional": []
      }
    }
  }
}