message: In ParseExampleOp: pass example::Result by const reference to WriteOutput().
diff: @@ -247,7 +247,8 @@ class ParseExampleOp : public OpKernel {
  ctx->device()->tensorflow_cpu_worker_threads()->workers, result);
  }
  - Status WriteOutput(example::Result result, OpKernelContext* ctx) const {
  + Status WriteOutput(const example::Result& result,
  + OpKernelContext* ctx) const {
  OpOutputList dense_values;
  OpOutputList sparse_indices;
  OpOutputList sparse_values;
  