Remove PrefServiceSimple, replacing it with PrefService and PrefRegistrySimple.

chrome/browser/policy/policy_statistics_collector.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.
 
 #include "chrome/browser/policy/policy_statistics_collector.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/metrics/histogram.h"
 #include "base/task_runner.h"
 #include "chrome/browser/policy/policy_service.h"
+#include "chrome/browser/prefs/pref_registry_simple.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/pref_names.h"
 #include "policy/policy_constants.h"
 
 namespace policy {
 
 const int PolicyStatisticsCollector::kStatisticsUpdateRate =
     24 * 60 * 60 * 1000;  // 24 hours.
 
 PolicyStatisticsCollector::PolicyStatisticsCollector(
@@ skipping 17 matching lines @@
   Time last_update = Time::FromInternalValue(
       prefs_->GetInt64(prefs::kLastPolicyStatisticsUpdate));
   TimeDelta delay = std::max(Time::Now() - last_update, TimeDelta::FromDays(0));
   if (delay >= update_rate)
     CollectStatistics();
   else
     ScheduleUpdate(update_rate - delay);
 }
 
 // static
-void PolicyStatisticsCollector::RegisterPrefs(PrefServiceSimple* prefs) {
-  prefs->RegisterInt64Pref(prefs::kLastPolicyStatisticsUpdate, 0);
+void PolicyStatisticsCollector::RegisterPrefs(PrefRegistrySimple* registry) {
+  registry->RegisterInt64Pref(prefs::kLastPolicyStatisticsUpdate, 0);
 }
 
 void PolicyStatisticsCollector::RecordPolicyUse(int id) {
   if (max_policy_id_ == -1) {
     const policy::PolicyDefinitionList* policy_list =
         policy::GetChromePolicyDefinitionList();
     for (const policy::PolicyDefinitionList::Entry* policy = policy_list->begin;
          policy != policy_list->end; ++policy) {
       if (policy->id > max_policy_id_)
         max_policy_id_ = policy->id;
@@ skipping 27 matching lines @@
 }
 
 void PolicyStatisticsCollector::ScheduleUpdate(base::TimeDelta delay) {
   update_callback_.Reset(base::Bind(
       &PolicyStatisticsCollector::CollectStatistics,
       base::Unretained(this)));
   task_runner_->PostDelayedTask(FROM_HERE, update_callback_.callback(), delay);
 }
 
 }  // namespace policy