  void SendScrollBeginAckIfNeeded(InputEventAckState ack_result) {
    MockWidgetInputHandler::MessageVector events =
        GetAndResetDispatchedMessages();
    SendScrollBeginAckIfNeeded(events, ack_result);
  }

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.