WriteAscii        466 base/metrics/histogram.h   virtual void WriteAscii(std::string* output) const OVERRIDE;
WriteAscii        139 base/metrics/histogram_base.h   virtual void WriteAscii(std::string* output) const = 0;
WriteAscii         76 base/metrics/sparse_histogram.h   virtual void WriteAscii(std::string* output) const OVERRIDE;
WriteAscii        162 base/metrics/statistics_recorder.cc     (*it)->WriteAscii(output);