void RenderWidgetHostImpl::OnUpdateScreenRectsAck() {
  waiting_for_screen_rects_ack_ = false;
  if (!view_)
    return;

  if (view_->GetViewBounds() == last_view_screen_rect_ &&
      view_->GetBoundsInRootWindow() == last_window_screen_rect_) {
    return;
  }

  SendScreenRects();
}

Unknown