| Index: base/metrics/statistics_recorder.cc | 
| diff --git a/base/metrics/statistics_recorder.cc b/base/metrics/statistics_recorder.cc | 
| index f6174f30f0ce2b6cefee19d7fd405088ae5da02e..13aeeb7be4b319a2badaf53376bf42fa0df04c8d 100644 | 
| --- a/base/metrics/statistics_recorder.cc | 
| +++ b/base/metrics/statistics_recorder.cc | 
| @@ -308,7 +308,7 @@ StatisticsRecorder::~StatisticsRecorder() { | 
| DCHECK(histograms_ && ranges_ && lock_); | 
| if (dump_on_exit_) { | 
| string output; | 
| -    WriteGraph("", &output); | 
| +    WriteGraph(std::string(), &output); | 
| DLOG(INFO) << output; | 
| } | 
|  | 
|  |