Remove the hash fields from FieldTrials.

chrome/browser/metrics/metrics_log_unittest.cc

Index: chrome/browser/metrics/metrics_log_unittest.cc
diff --git a/chrome/browser/metrics/metrics_log_unittest.cc b/chrome/browser/metrics/metrics_log_unittest.cc
index 03654653866fd64b39543f19b96d2c69d2d0d049..ec7c11b5c4a932f899e6ef50d2bb425974b13436 100644
--- a/chrome/browser/metrics/metrics_log_unittest.cc
+++ b/chrome/browser/metrics/metrics_log_unittest.cc
@@ -11,6 +11,7 @@
 #include "chrome/browser/metrics/metrics_log.h"
 #include "chrome/browser/prefs/browser_prefs.h"
 #include "chrome/browser/prefs/pref_service.h"
+#include "chrome/common/metrics/experiments_helper.h"
 #include "chrome/common/metrics/proto/system_profile.pb.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_pref_service.h"
@@ -28,7 +29,7 @@ const int kSessionId = 127;
 const int kScreenWidth = 1024;
 const int kScreenHeight = 768;
 const int kScreenCount = 3;
-const base::FieldTrial::NameGroupId kFieldTrialIds[] = {
+const experiments_helper::NameGroupId kFieldTrialIds[] = {
   {37, 43},
   {13, 47},
   {23, 17}
@@ -63,7 +64,7 @@ class TestMetricsLog : public MetricsLog {
   }
 
   virtual void GetFieldTrialIds(
-      std::vector<base::FieldTrial::NameGroupId>* field_trial_ids) const
+      std::vector<experiments_helper::NameGroupId>* field_trial_ids) const
       OVERRIDE {
     ASSERT_TRUE(field_trial_ids->empty());