1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_COMMON_VARIATIONS_EXPERIMENT_LABELS_H_ 6 #define CHROME_COMMON_VARIATIONS_EXPERIMENT_LABELS_H_ 7 8 #include "base/metrics/field_trial.h" 9 #include "base/strings/string16.h" 10 11 namespace chrome_variations { 12 13 // Takes the list of active groups and builds the label for the ones that have 14 // Google Update VariationID associated with them. This will return an empty 15 // string if there are no such groups. 16 base::string16 BuildGoogleUpdateExperimentLabel( 17 const base::FieldTrial::ActiveGroups& active_groups); 18 19 // Creates a final combined experiment labels string with |variation_labels| 20 // and |other_labels|, appropriately appending a separator based on their 21 // contents. It is assumed that |variation_labels| and |other_labels| do not 22 // have leading or trailing separators. 23 base::string16 CombineExperimentLabels(const base::string16& variation_labels, 24 const base::string16& other_labels); 25 26 // Takes the value of experiment_labels from the registry and returns a valid 27 // experiment_labels string value containing only the labels that are not 28 // associated with Chrome Variations. 29 base::string16 ExtractNonVariationLabels(const base::string16& labels); 30 31 } // namespace chrome_variations 32 33 #endif // CHROME_COMMON_VARIATIONS_EXPERIMENT_LABELS_H_ 34
