message: Use the new poplibs pooling interface
diff: #include <poplar/Graph.hpp>
  #include <poplar/Engine.hpp>
  -#include <popnn/MaxPool.hpp>
  +#include <popnn/PoolingDef.hpp>
  +#include <popnn/Pooling.hpp>
  namespace xla {
  namespace poplarplugin {
  @@ -365,7 +366,8 @@ CreatePoplibsWindowReduction(poplar::Graph &graph,
  };
  poplar::program::Sequence prog;
  - poplar::Tensor out = popnn::maxpool::maxPool(graph, kernel_shape, stride,
  + poplar::Tensor out = popnn::pooling::pool(graph, PoolingType::MAX,
  + kernel_shape, stride,
  padding_lower, padding_upper,
  to_reduce, prog, inst->name());
  