Move Variations stuff into variations/ directories and add OWNERS files for the variations client t…

chrome/browser/metrics/variations_service.h

Index: chrome/browser/metrics/variations_service.h
===================================================================
--- chrome/browser/metrics/variations_service.h	(revision 151546)
+++ chrome/browser/metrics/variations_service.h	(working copy)
@@ -1,146 +0,0 @@
-// 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.
-
-#ifndef CHROME_BROWSER_METRICS_VARIATIONS_SERVICE_H_
-#define CHROME_BROWSER_METRICS_VARIATIONS_SERVICE_H_
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/gtest_prod_util.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/metrics/field_trial.h"
-#include "base/time.h"
-#include "base/timer.h"
-#include "chrome/browser/metrics/proto/study.pb.h"
-#include "chrome/browser/metrics/proto/trials_seed.pb.h"
-#include "chrome/common/chrome_version_info.h"
-#include "googleurl/src/gurl.h"
-#include "net/url_request/url_fetcher_delegate.h"
-
-class PrefService;
-
-namespace net {
-class URLFetcher;
-}  // namespace net
-
-namespace chrome_variations {
-
-// Used to setup field trials based on stored variations seed data, and fetch
-// new seed data from the variations server.
-class VariationsService : public net::URLFetcherDelegate {
- public:
-  VariationsService();
-  virtual ~VariationsService();
-
-  // Creates field trials based on Variations Seed loaded from local prefs. If
-  // there is a problem loading the seed data, all trials specified by the seed
-  // may not be created.
-  bool CreateTrialsFromSeed(PrefService* local_prefs);
-
-  // Calls FetchVariationsSeed once and repeats this periodically. See
-  // implementation for details on the period. Must be called after
-  // |CreateTrialsFromSeed|.
-  void StartRepeatedVariationsSeedFetch();
-
-  // Starts the fetching process once, where |OnURLFetchComplete| is called with
-  // the response.
-  void FetchVariationsSeed();
-
-  // net::URLFetcherDelegate implementation:
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
-
-  // Register Variations related prefs in Local State.
-  static void RegisterPrefs(PrefService* prefs);
-
- private:
-  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, CheckStudyChannel);
-  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, CheckStudyLocale);
-  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, CheckStudyPlatform);
-  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, CheckStudyVersion);
-  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, CheckStudyVersionWildcards);
-  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, CheckStudyStartDate);
-  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, IsStudyExpired);
-  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, LoadSeed);
-  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, StoreSeed);
-  FRIEND_TEST_ALL_PREFIXES(VariationsServiceTest, ValidateStudy);
-
-  // Store the given seed data to the given local prefs. Note that |seed_data|
-  // is assumed to be the raw serialized protobuf data stored in a string. It
-  // will be Base64Encoded for storage. If the string is invalid or the encoding
-  // fails, the |local_prefs| is left as is and the function returns false.
-  bool StoreSeedData(const std::string& seed_data,
-                     const base::Time& seed_date,
-                     PrefService* local_prefs);
-
-  // Returns whether |study| should be disabled according to its restriction
-  // parameters. Uses |version_info| for min / max version checks and
-  // |reference_date| for the start date check.
-  static bool ShouldAddStudy(const Study& study,
-                             const chrome::VersionInfo& version_info,
-                             const base::Time& reference_date);
-
-  // Checks whether a study is applicable for the given |channel| per |filter|.
-  static bool CheckStudyChannel(const Study_Filter& filter,
-                                chrome::VersionInfo::Channel channel);
-
-  // Checks whether a study is applicable for the given |locale| per |filter|.
-  static bool CheckStudyLocale(const chrome_variations::Study_Filter& filter,
-                               const std::string& locale);
-
-  // Checks whether a study is applicable for the given |platform| per |filter|.
-  static bool CheckStudyPlatform(const Study_Filter& filter,
-                                 chrome_variations::Study_Platform platform);
-
-  // Checks whether a study is applicable for the given version per |filter|.
-  static bool CheckStudyVersion(const Study_Filter& filter,
-                                const std::string& version_string);
-
-  // Checks whether a study is applicable for the given date/time per |filter|.
-  static bool CheckStudyStartDate(const Study_Filter& filter,
-                                  const base::Time& date_time);
-
-  // Checks whether |study| is expired using the given date/time.
-  static bool IsStudyExpired(const Study& study,
-                             const base::Time& date_time);
-
-  // Validates the sanity of |study| and computes the total probability.
-  static bool ValidateStudyAndComputeTotalProbability(
-      const Study& study,
-      base::FieldTrial::Probability* total_probability);
-
-  // Loads the Variations seed data from the given local prefs into |seed|. If
-  // there is a problem with loading, the pref value is cleared and false is
-  // returned. If successful, |seed| will contain the loaded data and true is
-  // returned.
-  bool LoadTrialsSeedFromPref(PrefService* local_prefs, TrialsSeed* seed);
-
-  // Creates and registers a field trial from the |study| data. Disables the
-  // trial if IsStudyExpired(study, reference_date) is true.
-  void CreateTrialFromStudy(const Study& study,
-                            const base::Time& reference_date);
-
-  // Contains the current seed request. Will only have a value while a request
-  // is pending, and will be reset by |OnURLFetchComplete|.
-  scoped_ptr<net::URLFetcher> pending_seed_request_;
-
-  // The URL to use for querying the variations server.
-  GURL variations_server_url_;
-
-  // Cached serial number from the most recently fetched variations seed.
-  std::string variations_serial_number_;
-
-  // Tracks whether |CreateTrialsFromSeed| has been called, to ensure that
-  // it gets called prior to |StartRepeatedVariationsSeedFetch|.
-  bool create_trials_from_seed_called_;
-
-  // The timer used to repeatedly ping the server. Keep this as an instance
-  // member so if VariationsService goes out of scope, the timer is
-  // automatically canceled.
-  base::RepeatingTimer<VariationsService> timer_;
-};
-
-}  // namespace chrome_variations
-
-#endif  // CHROME_BROWSER_METRICS_VARIATIONS_SERVICE_H_