Activate prepopulated fieldtrials

chrome/common/variations/variations_util.h

 // Copyright 2014 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.
 
 #ifndef CHROME_COMMON_VARIATIONS_VARIATIONS_UTIL_H_
 #define CHROME_COMMON_VARIATIONS_VARIATIONS_UTIL_H_
 
 #include <string>
 
 namespace chrome_variations {
 
+struct FieldTrialTestingConfig;
+
 // Get the current set of chosen FieldTrial groups (aka variations) and send
 // them to the child process logging module so it can save it for crash dumps.
 void SetChildProcessLoggingVariationList();
 
 // Provides a mechanism to associate multiple set of params to multiple groups
 // with a formatted string specified from commandline. See
 // kForceFieldTrialParams in chrome/common/chrome_switches.cc for more details
 // on the formatting.
 bool AssociateParamsFromString(const std::string& variations_string);
 
+// Provides a mechanism to associate multiple set of params to multiple groups
+// with the |config| struct. This will also force the selection of FieldTrial
+// groups specified in the |config|.
+void AssociateParamsFromFieldTrialConfig(const FieldTrialTestingConfig& config);
+
+// Associates params to FieldTrial groups and forces the selection of groups
+// specified in testing/variations/fieldtrial_testing_config_*.json.
+void AssociateDefaultFieldTrialConfig();
+
 }  // namespace chrome_variations
 
 #endif  // CHROME_COMMON_VARIATIONS_VARIATIONS_UTIL_H_