message: renaming namespace cuda_helper to gpu_helper.
  Also adding a `cuda_helper` as an alias for `gpu_helper` in non ROCm mode (for backwards compatibility)
diff: @@ -160,7 +160,7 @@ __device__ EIGEN_ALWAYS_INLINE Eigen::half GpuShuffleXorSync(
  // Aliased in gpu_device_functions.h
  #endif
  -namespace cuda_helper {
  +namespace gpu_helper {
  template <typename T, typename OutType = int32>
  __device__ OutType upper_bound(const T* first, OutType count, T val) {
  const T* orig = first;
  @@ -202,6 +202,11 @@ __device__ OutType lower_bound(const T* first, OutType count, T val) {
  }
  } // namespace cuda_helper
  +
  +#ifndef TENSORFLOW_USE_ROCM
  + namespace cuda_helper = gpu_helper;
  +#endif
  +
  } // namespace tensorflow
  #endif // GOOGLE_CUDA || TENSORFLOW_USE_ROCM
  