AtomicCount        64 base/metrics/histogram_samples.h   HistogramBase::AtomicCount redundant_count_;
AtomicCount        49 base/metrics/sample_vector.h   std::vector<HistogramBase::AtomicCount> counts_;
AtomicCount        59 base/metrics/sample_vector.h   SampleVectorIterator(const std::vector<HistogramBase::AtomicCount>* counts,
AtomicCount        76 base/metrics/sample_vector.h   const std::vector<HistogramBase::AtomicCount>* counts_;