Examine source code of Google Account Memory

{
  "manifest_version": 3,
  "name": "Google Account Memory",
  "version": "1.0",
  "description": "Remembers your active Google account and forces new tabs to use it.",
  "browser_specific_settings": {
    "gecko": {
      "id": "google-account-memory@hypocristis",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage"
  ],
  "host_permissions": [
    "*://*.google.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}