Move active field trial API to variations component.

chrome/browser/metrics/metrics_service.h

 // 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.
 
 // This file defines a service that collects information about the user
 // experience in order to help improve future versions of the app.
 
 #ifndef CHROME_BROWSER_METRICS_METRICS_SERVICE_H_
 #define CHROME_BROWSER_METRICS_METRICS_SERVICE_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/user_metrics.h"
 #include "base/observer_list.h"
 #include "base/process/kill.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "chrome/browser/metrics/metrics_log.h"
 #include "chrome/browser/metrics/metrics_service_observer.h"
 #include "chrome/browser/metrics/tracking_synchronizer_observer.h"
 #include "chrome/common/metrics/metrics_service_base.h"
 #include "chrome/installer/util/google_update_settings.h"
+#include "components/variations/active_field_trials.h"
 #include "content/public/browser/browser_child_process_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/user_metrics.h"
 #include "net/url_request/url_fetcher_delegate.h"
 
 #if defined(OS_ANDROID)
 #include "chrome/browser/android/activity_type_ids.h"
 #elif defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/external_metrics.h"
 #endif
 
 class ChromeBrowserMetricsServiceObserver;
 class MetricsReportingScheduler;
 class PrefService;
 class PrefRegistrySimple;
 class Profile;
 class TemplateURLService;
 
 namespace {
 class CrashesDOMHandler;
 class FlashDOMHandler;
 }
 
 namespace base {
 class DictionaryValue;
 class MessageLoopProxy;
 }
 
-namespace chrome_variations {
+namespace variations {
 struct ActiveGroupId;
 }
 
 namespace content {
 class RenderProcessHost;
 class WebContents;
 struct WebPluginInfo;
 }
 
 namespace extensions {
@@ skipping 22 matching lines @@
 struct ProcessDataSnapshot;
 }
 
 // A Field Trial and its selected group, which represent a particular
 // Chrome configuration state. For example, the trial name could map to
 // a preference name, and the group name could map to a preference value.
 struct SyntheticTrialGroup {
  public:
   ~SyntheticTrialGroup();
 
-  chrome_variations::ActiveGroupId id;
+  variations::ActiveGroupId id;
   base::TimeTicks start_time;
 
  private:
   friend class MetricsService;
   FRIEND_TEST_ALL_PREFIXES(MetricsServiceTest, RegisterSyntheticTrial);
 
   // This constructor is private specifically so as to control which code is
   // able to access it. New code that wishes to use it should be added as a
   // friend class.
   SyntheticTrialGroup(uint32 trial, uint32 group);
@@ skipping 361 matching lines @@
   // Sets the value of the specified path in prefs and schedules a save.
   void RecordBooleanPrefValue(const char* path, bool value);
 
   // Returns true if process of type |type| should be counted as a plugin
   // process, and false otherwise.
   static bool IsPluginProcess(int process_type);
 
   // Returns a list of synthetic field trials that were active for the entire
   // duration of the current log.
   void GetCurrentSyntheticFieldTrials(
-      std::vector<chrome_variations::ActiveGroupId>* synthetic_trials);
+      std::vector<variations::ActiveGroupId>* synthetic_trials);
 
   // Used to manage various metrics reporting state prefs, such as client id,
   // low entropy source and whether metrics reporting is enabled. Weak pointer.
   metrics::MetricsStateManager* state_manager_;
 
   base::ActionCallback action_callback_;
 
   content::NotificationRegistrar registrar_;
 
   // Set to true when |ResetMetricsIDsIfNecessary| is called for the first time.
@@ skipping 145 matching lines @@
 
   // Registers/unregisters |observer| to receive MetricsLog notifications
   // from metrics service.
   static void AddMetricsServiceObserver(MetricsServiceObserver* observer);
   static void RemoveMetricsServiceObserver(MetricsServiceObserver* observer);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(MetricsServiceHelper);
 };
 
 #endif  // CHROME_BROWSER_METRICS_METRICS_SERVICE_H_