Rename base::FieldTrialList::RegistrationList --> RegistrationMap.

base/metrics/field_trial.h

Index: base/metrics/field_trial.h
diff --git a/base/metrics/field_trial.h b/base/metrics/field_trial.h
index 70ce2f9c45d7e1900f6c08ffe42eee7c1e4b976e..5a4375ee65ed1510b00b7062b0adae735ab3d794 100644
--- a/base/metrics/field_trial.h
+++ b/base/metrics/field_trial.h
@@ -441,7 +441,7 @@ class BASE_EXPORT FieldTrialList {
 
  private:
   // A map from FieldTrial names to the actual instances.
-  typedef std::map<std::string, FieldTrial*> RegistrationList;
+  typedef std::map<std::string, FieldTrial*> RegistrationMap;
 
   // If one-time randomization is enabled, returns a weak pointer to the
   // corresponding EntropyProvider. Otherwise, returns NULL.
@@ -466,7 +466,7 @@ class BASE_EXPORT FieldTrialList {
 
   // Lock for access to registered_.
   base::Lock lock_;
-  RegistrationList registered_;
+  RegistrationMap registered_;
 
   // Entropy provider to be used for one-time randomized field trials. If NULL,
   // one-time randomization is not supported.