message: [Grappler] Call remapper after layout optimizer
  Not all fusion patterns in Remapper supported for NHWC and NCHW. Assign data layout before looking for fusable patterns.
diff: @@ -191,9 +191,6 @@ Status MetaOptimizer::InitializeOptimizers(
  if (cfg_.shape_optimization() != RewriterConfig::OFF) {
  optimizers->push_back(MakeUnique<ShapeOptimizer>());
  }
  - if (cfg_.remapping() != RewriterConfig::OFF) {
  - optimizers->push_back(MakeUnique<Remapper>(cfg_.remapping()));
  - }
  if (cfg_.pin_to_host_optimization() == RewriterConfig::ON) {
  optimizers->push_back(MakeUnique<PinToHostOptimizer>());
  }
  @@ -216,6 +213,9 @@ Status MetaOptimizer::InitializeOptimizers(
  if (cfg_.layout_optimizer() != RewriterConfig::OFF) {
  optimizers->push_back(MakeUnique<GenericLayoutOptimizer>());
  }
  + if (cfg_.remapping() != RewriterConfig::OFF) {
  + optimizers->push_back(MakeUnique<Remapper>(cfg_.remapping()));
  + }
  if (cfg_.memory_optimization() != RewriterConfig::NO_MEM_OPT) {
  if (cfg_.memory_optimizer_target_node_name_scope().empty()) {
  optimizers->push_back(
  