Move active field trial API to variations component.

chrome/browser/metrics/metrics_service.cc

 // 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.
 
 //------------------------------------------------------------------------------
 // Description of the life cycle of a instance of MetricsService.
 //
 //  OVERVIEW
 //
 // A MetricsService instance is typically created at application startup.  It is
@@ skipping 1148 matching lines @@
   // Adds to ongoing logs.
   log_manager_.current_log()->set_hardware_class(hardware_class_);
 
   // Put incremental data (histogram deltas, and realtime stats deltas) at the
   // end of all log transmissions (initial log handles this separately).
   // RecordIncrementalStabilityElements only exists on the derived
   // MetricsLog class.
   MetricsLog* current_log =
       static_cast<MetricsLog*>(log_manager_.current_log());
   DCHECK(current_log);
-  std::vector<chrome_variations::ActiveGroupId> synthetic_trials;
+  std::vector<variations::ActiveGroupId> synthetic_trials;
   GetCurrentSyntheticFieldTrials(&synthetic_trials);
   current_log->RecordEnvironment(plugins_, google_update_metrics_,
                                  synthetic_trials);
   PrefService* pref = g_browser_process->local_state();
   base::TimeDelta incremental_uptime;
   base::TimeDelta uptime;
   GetUptimes(pref, &incremental_uptime, &uptime);
   current_log->RecordStabilityMetrics(incremental_uptime, uptime);
 
   RecordCurrentHistograms();
@@ skipping 265 matching lines @@
   // that they're not lost in case of a crash before upload time.
   log_manager_.PersistUnsentLogs();
 
   has_initial_stability_log_ = true;
 }
 
 void MetricsService::PrepareInitialMetricsLog() {
   DCHECK(state_ == INIT_TASK_DONE || state_ == SENDING_INITIAL_STABILITY_LOG);
   initial_metrics_log_->set_hardware_class(hardware_class_);
 
-  std::vector<chrome_variations::ActiveGroupId> synthetic_trials;
+  std::vector<variations::ActiveGroupId> synthetic_trials;
   GetCurrentSyntheticFieldTrials(&synthetic_trials);
   initial_metrics_log_->RecordEnvironment(plugins_, google_update_metrics_,
                                           synthetic_trials);
   PrefService* pref = g_browser_process->local_state();
   base::TimeDelta incremental_uptime;
   base::TimeDelta uptime;
   GetUptimes(pref, &incremental_uptime, &uptime);
   initial_metrics_log_->RecordStabilityMetrics(incremental_uptime, uptime);
 
   // Histograms only get written to the current log, so make the new log current
@@ skipping 254 matching lines @@
   SyntheticTrialGroup trial_group = trial;
   trial_group.start_time = base::TimeTicks::Now();
   synthetic_trial_groups_.push_back(trial_group);
 }
 
 void MetricsService::CheckForClonedInstall() {
   state_manager_->CheckForClonedInstall();
 }
 
 void MetricsService::GetCurrentSyntheticFieldTrials(
-    std::vector<chrome_variations::ActiveGroupId>* synthetic_trials) {
+    std::vector<variations::ActiveGroupId>* synthetic_trials) {
   DCHECK(synthetic_trials);
   synthetic_trials->clear();
   const MetricsLog* current_log =
       static_cast<const MetricsLog*>(log_manager_.current_log());
   for (size_t i = 0; i < synthetic_trial_groups_.size(); ++i) {
     if (synthetic_trial_groups_[i].start_time <= current_log->creation_time())
       synthetic_trials->push_back(synthetic_trial_groups_[i].id);
   }
 }
 
@@ skipping 221 matching lines @@
   if (metrics_service)
     metrics_service->AddObserver(observer);
 }
 
 void MetricsServiceHelper::RemoveMetricsServiceObserver(
     MetricsServiceObserver* observer) {
   MetricsService* metrics_service = g_browser_process->metrics_service();
   if (metrics_service)
     metrics_service->RemoveObserver(observer);
 }