WriteJSON         144 base/metrics/histogram_base.h   void WriteJSON(std::string* output) const;
WriteJSON         190 base/metrics/statistics_recorder.cc     (*it)->WriteJSON(&json);
WriteJSON          61 content/browser/histogram_message_filter.cc     histogram->WriteJSON(histogram_json);
WriteJSON         116 content/renderer/stats_collection_controller.cc     histogram->WriteJSON(&output);