message: [XLA:GPU] Fix -Wreorder warning
  tensorflow/compiler/xla/service/gpu/ir_emitter_unnested.h:120:11: error: field 'block_epilogue_generator_' will be initialized after field 'block_prologue_generator_' [-Werror,-Wreorder]
  block_epilogue_generator_(std::move(block_epilogue_generator)),
diff: @@ -117,8 +117,8 @@ class IrEmitterUnnested : public IrEmitter {
  BlockPrologueGenerator block_prologue_generator = {},
  BlockEpilogueGenerator block_epilogue_generator = {})
  : tile_element_generator_(std::move(tile_element_generator)),
  - block_epilogue_generator_(std::move(block_epilogue_generator)),
  - block_prologue_generator_(std::move(block_prologue_generator)) {}
  + block_prologue_generator_(std::move(block_prologue_generator)),
  + block_epilogue_generator_(std::move(block_epilogue_generator)) {}
  const TileElementGenerator& GetTileElementGenerator() const {
  return tile_element_generator_;
  