setAssistiveWindowButtonHighlighted method
Highlights/Unhighlights a button in an assistive window.
returns Called when the operation completes. On failure,
runtime.lastError is set.
Implementation
Future<void> setAssistiveWindowButtonHighlighted(
    SetAssistiveWindowButtonHighlightedParameters parameters) async {
  await promiseToFuture<void>($js.chrome.input.ime
      .setAssistiveWindowButtonHighlighted(parameters.toJS));
}