Create variations target that depends on base.

chrome/browser/metrics/variations/variations_seed_processor.h

-// Copyright 2013 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_BROWSER_METRICS_VARIATIONS_VARIATIONS_SEED_PROCESSOR_H_
-#define CHROME_BROWSER_METRICS_VARIATIONS_VARIATIONS_SEED_PROCESSOR_H_
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/gtest_prod_util.h"
-#include "base/metrics/field_trial.h"
-#include "base/time/time.h"
-#include "base/version.h"
-#include "chrome/browser/metrics/proto/study.pb.h"
-#include "chrome/browser/metrics/proto/trials_seed.pb.h"
-
-namespace chrome_variations {
-
-// Helper class to instantiate field trials from a variations seed.
-class VariationsSeedProcessor {
- public:
-  VariationsSeedProcessor();
-  virtual ~VariationsSeedProcessor();
-
-  // Creates field trials from the specified variations |seed|, based on the
-  // specified configuration (locale, current date, version and channel).
-  void CreateTrialsFromSeed(const TrialsSeed& seed,
-                            const std::string& locale,
-                            const base::Time& reference_date,
-                            const base::Version& version,
-                            Study_Channel channel);
-
- private:
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest, CheckStudyChannel);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest, CheckStudyLocale);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest, CheckStudyPlatform);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest, CheckStudyStartDate);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest, CheckStudyVersion);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest,
-                           CheckStudyVersionWildcards);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest, ForceGroupWithFlag1);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest, ForceGroupWithFlag2);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest,
-                           ForceGroup_ChooseFirstGroupWithFlag);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest,
-                           ForceGroup_DontChooseGroupWithFlag);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest, IsStudyExpired);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest, ValidateStudy);
-  FRIEND_TEST_ALL_PREFIXES(VariationsSeedProcessorTest, VariationParams);
-
-  // Checks whether a study is applicable for the given |channel| per |filter|.
-  bool CheckStudyChannel(const Study_Filter& filter, Study_Channel channel);
-
-  // Checks whether a study is applicable for the given |locale| per |filter|.
-  bool CheckStudyLocale(const Study_Filter& filter, const std::string& locale);
-
-  // Checks whether a study is applicable for the given |platform| per |filter|.
-  bool CheckStudyPlatform(const Study_Filter& filter, Study_Platform platform);
-
-  // Checks whether a study is applicable for the given date/time per |filter|.
-  bool CheckStudyStartDate(const Study_Filter& filter,
-                           const base::Time& date_time);
-
-  // Checks whether a study is applicable for the given version per |filter|.
-  bool CheckStudyVersion(const Study_Filter& filter,
-                         const base::Version& version);
-
-  // Creates and registers a field trial from the |study| data. Disables the
-  // trial if |is_expired| is true.
-  void CreateTrialFromStudy(const Study& study, bool is_expired);
-
-  // Checks whether |study| is expired using the given date/time.
-  bool IsStudyExpired(const Study& study, const base::Time& date_time);
-
-  // Returns whether |study| should be disabled according to its restriction
-  // parameters. Uses |version_info| for min / max version checks,
-  // |reference_date| for the start date check and |channel| for channel
-  // checks.
-  bool ShouldAddStudy(const Study& study,
-                      const std::string& locale,
-                      const base::Time& reference_date,
-                      const base::Version& version,
-                      Study_Channel channel);
-
-  // Validates the sanity of |study| and computes the total probability.
-  bool ValidateStudyAndComputeTotalProbability(
-      const Study& study,
-      base::FieldTrial::Probability* total_probability);
-
-  DISALLOW_COPY_AND_ASSIGN(VariationsSeedProcessor);
-};
-
-}  // namespace chrome_variations
-
-#endif  // CHROME_BROWSER_METRICS_VARIATIONS_VARIATIONS_SEED_PROCESSOR_H_