void RenderWidgetHostImpl::WasHidden() {
  if (is_hidden_)
    return;

  RejectMouseLockOrUnlockIfNecessary();

  TRACE_EVENT0("renderer_host", "RenderWidgetHostImpl::WasHidden");
  is_hidden_ = true;

  StopHangMonitorTimeout();

  Send(new ViewMsg_WasHidden(routing_id_));

  process_->WidgetHidden();

  bool is_visible = false;
  NotificationService::current()->Notify(
      NOTIFICATION_RENDER_WIDGET_VISIBILITY_CHANGED,
      Source<RenderWidgetHost>(this),
      Details<bool>(&is_visible));
}

Unknown