message: Replace cout with VLOG(2).
diff: @@ -200,7 +200,7 @@ Status Remapper::Optimize(Cluster* /*cluster*/, const GrapplerItem& item,
  }
  }
  if (optimizable) {
  - std::cout << "Optimizing fused batch norm node " << node.DebugString()
  + VLOG(2) << "Optimizing fused batch norm node " << node.DebugString()
  << std::endl;
  AddBatchNormNodes(optimized_graph, node);
  continue;
  