Examine source code of Google Meet Default Account

{
  "name": "Google Meet Default Account",
  "version": "1.2",
  "manifest_version": 2,
  "description": "Set the default account for google meet for users who are signed in to multiple Google accounts. Icon from Font Awesome.",
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "https://meet.google.com/*"
  ],
  "icons": {
    "16": "headset_16.png",
    "48": "headset_48.png",
    "128": "headset_128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://meet.google.com/*"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "default_locale": "en",
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f0c3e740-942f-422a-b133-1cb39d1f2fdb}"
    }
  }
}