JSON Schema Property 'open_in_tab'

false

"open_in_tab": {
    "type": "boolean",
    "description": "If true, your extension's options page will be opened in a new tab rather than embedded in chrome://extensions. The default is false, and we recommend that you don't change it. This is only useful to delay the inevitable deprecation of the old options UI! It will be removed soon, so try not to use it. It will break.",
    "default": false
}

• /properties/options_ui