| Index: chrome/browser/engagement/site_engagement_service.cc
 | 
| diff --git a/chrome/browser/engagement/site_engagement_service.cc b/chrome/browser/engagement/site_engagement_service.cc
 | 
| index 9e7798cd6dc77adce456d32667de46076d3a7149..d19f37c88d31cb29d3ad95ce11033acaa55f2ba4 100644
 | 
| --- a/chrome/browser/engagement/site_engagement_service.cc
 | 
| +++ b/chrome/browser/engagement/site_engagement_service.cc
 | 
| @@ -11,6 +11,7 @@
 | 
|  #include "base/command_line.h"
 | 
|  #include "base/metrics/field_trial.h"
 | 
|  #include "base/strings/string_number_conversions.h"
 | 
| +#include "base/strings/string_util.h"
 | 
|  #include "base/time/clock.h"
 | 
|  #include "base/time/default_clock.h"
 | 
|  #include "base/values.h"
 | 
| 
 |