Examine source code of Groups 'On the Bar'

{
  "manifest_version": 2,
  "default_locale": "en",
  "name": "__MSG_extensionName__",
  "version": "3.0.0",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "grupos-na-barra-firefox@tiago7.local",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity",
          "bookmarksInfo"
        ]
      }
    }
  },
  "permissions": [
    "bookmarks",
    "tabs",
    "cookies",
    "tabGroups",
    "storage",
    "menus",
    "webRequest",
    "webRequestBlocking",
    "https://grupos-na-barra.invalid/*"
  ],
  "content_security_policy": "script-src 'self'; object-src 'none'",
  "background": {
    "scripts": [
      "translations-extra.js",
      "ui-preferences.js",
      "sync-store.js",
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "__MSG_extensionName__",
    "default_popup": "popup/popup.html",
    "default_icon": "icons/icon.svg",
    "default_area": "navbar"
  },
  "options_ui": {
    "page": "visual/setup.html",
    "open_in_tab": true
  },
  "incognito": "not_allowed"
}