bool CudnnSupport::DoXYSlice(Stream* stream,
                             const dnn::BatchDescriptor& dimensions,
                             const DeviceMemory<float>& input_data,
                             int64 left_trim, int64 right_trim, int64 top_trim,
                             int64 bottom_trim,
                             DeviceMemory<float>* output_data) {
  LOG(FATAL) << "not yet implemented";  // TODO(leary)
  return false;
}
bool CudnnSupport::DoXYSlice(Stream* stream,
                             const dnn::BatchDescriptor& dimensions,
                             const DeviceMemory<float>& input_data,
                             int64 left_trim, int64 right_trim, int64 top_trim,
                             int64 bottom_trim,
                             DeviceMemory<float>* output_data) {
  LOG(FATAL) << "not yet implemented";   
  return false;
}