Examine source code of Vivius Homepage

{
  "manifest_version": 2,
  "name": "Vivius Homepage",
  "version": "1.1",
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon-128.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2bc73f96-ac47-48c1-922b-679d2f375ddb}"
    }
  }
}