444   std::unique_ptr<HistogramSamples> snapshot = SnapshotSampleVector();  in SnapshotDelta()  local
448     logged_samples_.swap(snapshot);  in SnapshotDelta()
453   snapshot->Subtract(*logged_samples_);  in SnapshotDelta()
454   logged_samples_->Add(*snapshot);  in SnapshotDelta()
455   return snapshot;  in SnapshotDelta()
462   std::unique_ptr<HistogramSamples> snapshot = SnapshotSampleVector();  in SnapshotFinalDelta()  local
466     snapshot->Subtract(*logged_samples_);  in SnapshotFinalDelta()
467   return snapshot;  in SnapshotFinalDelta()
598   std::unique_ptr<SampleVector> snapshot = SnapshotSampleVector();  in WriteAsciiImpl()  local
599   Count sample_count = snapshot->TotalCount();  in WriteAsciiImpl()
601   WriteAsciiHeader(*snapshot, sample_count, output);  in WriteAsciiImpl()
607     max_size = GetPeakBucketSize(*snapshot);  in WriteAsciiImpl()
612   while (0 == snapshot->GetCountAtIndex(largest_non_empty_bucket)) {  in WriteAsciiImpl()
621     if (snapshot->GetCountAtIndex(i)) {  in WriteAsciiImpl()
632     Count current = snapshot->GetCountAtIndex(i);  in WriteAsciiImpl()
641         0 == snapshot->GetCountAtIndex(i + 1)) {  in WriteAsciiImpl()
643              0 == snapshot->GetCountAtIndex(i + 1)) {  in WriteAsciiImpl()
711   std::unique_ptr<SampleVector> snapshot = SnapshotSampleVector();  in GetCountAndBucketData()  local
712   *count = snapshot->TotalCount();  in GetCountAndBucketData()
713   *sum = snapshot->sum();  in GetCountAndBucketData()
716     Sample count_at_index = snapshot->GetCountAtIndex(i);  in GetCountAndBucketData()