message: Use standard absl::BitGen instead of function unavailable in open-source absl
diff: @@ -33,11 +33,11 @@ void OverrideNodeIdForTesting(const int64 node_id) {
  }
  uint64 GetNodeId() {
  + static absl::BitGen bitgen;
  if (overridden_node_id > -1) {
  return overridden_node_id;
  } else {
  - return absl::Uniform(absl::SharedBitGen(), uint64{0},
  - std::numeric_limits<uint64>::max());
  + return absl::Uniform(bitgen, uint64{0}, std::numeric_limits<uint64>::max());
  }
  }
  