Expand FeatureList to support FieldTrial association.

base/metrics/field_trial.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/metrics/field_trial.h"
 
 #include <algorithm>
 
 #include "base/build_time.h"
 #include "base/logging.h"
@@ skipping 121 matching lines @@
   return group_;
 }
 
 const std::string& FieldTrial::group_name() {
   // Call |group()| to ensure group gets assigned and observers are notified.
   group();
   DCHECK(!group_name_.empty());
   return group_name_;
 }
 
+const std::string& FieldTrial::GetGroupNameWithoutActivation() {
+  FinalizeGroupChoice();
+  return group_name_;
+}
+
 void FieldTrial::SetForced() {
   // We might have been forced before (e.g., by CreateFieldTrial) and it's
   // first come first served, e.g., command line switch has precedence.
   if (forced_)
     return;
 
   // And we must finalize the group choice before we mark ourselves as forced.
   FinalizeGroupChoice();
   forced_ = true;
 }
@@ skipping 438 matching lines @@
     return;
   }
   AutoLock auto_lock(global_->lock_);
   DCHECK(!global_->PreLockedFind(trial->trial_name()));
   trial->AddRef();
   trial->SetTrialRegistered();
   global_->registered_[trial->trial_name()] = trial;
 }
 
 }  // namespace base