message: Fixing a latent compilation error. XStat has no set_uint32_value
  method. This was not triggered because it was only used in the method taking
  a long (yet unused) and in a class template so it wouldn't be compiled if it
  wasn't used.
diff: @@ -46,11 +46,7 @@ class XStatsBuilder {
  }
  void AddStatValue(const XStatMetadata& metadata,
  unsigned long value) { // NOLINT
  - if (sizeof(unsigned long) == 8) { // NOLINT
  AddStat(metadata)->set_uint64_value(value);
  - } else {
  - AddStat(metadata)->set_uint32_value(value);
  - }
  }
  void AddStatValue(const XStatMetadata& metadata,
  unsigned long long value) { // NOLINT
  @@ -60,11 +56,7 @@ class XStatsBuilder {
  AddStat(metadata)->set_int64_value(value);
  }
  void AddStatValue(const XStatMetadata& metadata, long value) { // NOLINT
  - if (sizeof(long) == 8) { // NOLINT
  AddStat(metadata)->set_int64_value(value);
  - } else {
  - AddStat(metadata)->set_int32_value(value);
  - }
  }
  void AddStatValue(const XStatMetadata& metadata, long long value) { // NOLINT
  AddStat(metadata)->set_int64_value(value);
  