Use Study and Experiment Terminology on the C++ Side For Fieldtrials

tools/variations/unittest_data/expected_output.h

 // Copyright 2015 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.
 
 // GENERATED FROM THE SCHEMA DEFINITION AND DESCRIPTION IN
 //   fieldtrial_testing_config_schema.json
 //   test_config.json
 // DO NOT EDIT.
 
 #ifndef TEST_OUTPUT_H_
 #define TEST_OUTPUT_H_
 
 #include <cstddef>
 
 
-struct FieldTrialTestingGroupParams {
+struct FieldTrialTestingExperimentParams {
   const char* const key;
   const char* const value;
 };
 
-struct FieldTrialTestingGroup {
+struct FieldTrialTestingExperiment {
   const char* const name;
-  const FieldTrialTestingGroupParams * params;
+  const FieldTrialTestingExperimentParams * params;
   const size_t params_size;
   const char* const * enable_features;
   const size_t enable_features_size;
   const char* const * disable_features;
   const size_t disable_features_size;
 };
 
-struct FieldTrialTestingTrial {
+struct FieldTrialTestingStudy {
   const char* const name;
-  const FieldTrialTestingGroup * groups;
-  const size_t groups_size;
+  const FieldTrialTestingExperiment * experiments;
+  const size_t experiments_size;
 };
 
 struct FieldTrialTestingConfig {
-  const FieldTrialTestingTrial * trials;
-  const size_t trials_size;
+  const FieldTrialTestingStudy * studies;
+  const size_t studies_size;
 };
 
 
 extern const FieldTrialTestingConfig kFieldTrialConfig;
 
 #endif  // TEST_OUTPUT_H_