message: Fix the issue that profiler raises UTF8 issue when serializing profile result.
diff: @@ -600,10 +600,8 @@ class CudaEventCollector {
  auto elapsed_us = GetElasedTimeUs(record.start_event, record.stop_event);
  auto stats = absl::make_unique<NodeExecStats>();
  - std::string node_name = record.kernel_name;
  - if (record.annotation) {
  - node_name = absl::StrCat(*record.annotation, "::", node_name);
  - }
  + std::string node_name =
  + record.annotation ? *record.annotation : record.kernel_name;
  stats->set_node_name(node_name);
  // TODO(csigg): Report grid size?
  std::string node_label;
  