1. DomName('Window.open')
  2. DocsEditable()
WindowBase open(String url, String target, [String features])

Source 

@DomName('Window.open')
@DocsEditable()
WindowBase open(String url, String target, [String features]) => _convertNativeToDart_Window(_blink.BlinkWindow.instance.open_Callback_3_(this, url, target, features));