Index: base/metrics/sample_map.h |
diff --git a/base/metrics/sample_map.h b/base/metrics/sample_map.h |
index 65a31f1ec7d30691774bfd51174fa1540787c23d..3b0e6f160a97e92fff6e0e7ba79f28aaa3565751 100644 |
--- a/base/metrics/sample_map.h |
+++ b/base/metrics/sample_map.h |
@@ -48,7 +48,7 @@ class BASE_EXPORT_PRIVATE SampleMapIterator : public SampleCountIterator { |
typedef std::map<HistogramBase::Sample, HistogramBase::Count> |
SampleToCountMap; |
- SampleMapIterator(const SampleToCountMap& sample_counts); |
+ explicit SampleMapIterator(const SampleToCountMap& sample_counts); |
virtual ~SampleMapIterator(); |
// SampleCountIterator implementation: |