Index: base/metrics/sparse_histogram.h |
diff --git a/base/metrics/sparse_histogram.h b/base/metrics/sparse_histogram.h |
index a7c569587a9a049c70019d23ec973de5435a434e..c53fcf99b2b0f734316762eaa605011667a7c0eb 100644 |
--- a/base/metrics/sparse_histogram.h |
+++ b/base/metrics/sparse_histogram.h |
@@ -39,7 +39,7 @@ class BASE_EXPORT_PRIVATE SparseHistogram : public HistogramBase { |
private: |
// Clients should always use FactoryGet to create SparseHistogram. |
- SparseHistogram(const std::string& name); |
+ explicit SparseHistogram(const std::string& name); |
virtual void GetParameters(DictionaryValue* params) const OVERRIDE; |
virtual void GetCountAndBucketData(Count* count, |