Remove PrefObserver usage, batch 9.

chrome/browser/policy/cloud_policy_subsystem.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/cloud_policy_subsystem.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 85 matching lines @@
     DCHECK(cloud_policy_cache_.get());
     DCHECK(device_token_fetcher_.get());
 
     refresh_pref_name_ = refresh_pref_name;
     CreateCloudPolicyController();
     device_management_service_->ScheduleInitialization(delay_milliseconds);
 
     PrefService* local_state = g_browser_process->local_state();
     DCHECK(pref_change_registrar_.IsEmpty());
     pref_change_registrar_.Init(local_state);
-    pref_change_registrar_.Add(refresh_pref_name_, this);
+    pref_change_registrar_.Add(
+        refresh_pref_name_,
+        base::Bind(&CloudPolicySubsystem::OnRefreshPrefChanged,
+                   base::Unretained(this)));
     UpdatePolicyRefreshRate(local_state->GetInteger(refresh_pref_name_));
   }
 }
 
 void CloudPolicySubsystem::Shutdown() {
   if (device_management_service_.get())
     device_management_service_->Shutdown();
   cloud_policy_controller_.reset();
   cloud_policy_cache_.reset();
   pref_change_registrar_.RemoveAll();
@@ skipping 34 matching lines @@
 
 void CloudPolicySubsystem::UpdatePolicyRefreshRate(int64 refresh_rate) {
   if (cloud_policy_controller_.get()) {
     // Clamp to sane values.
     refresh_rate = std::max(kPolicyRefreshRateMinMs, refresh_rate);
     refresh_rate = std::min(kPolicyRefreshRateMaxMs, refresh_rate);
     cloud_policy_controller_->SetRefreshRate(refresh_rate);
   }
 }
 
-void CloudPolicySubsystem::OnPreferenceChanged(PrefServiceBase* service,
-                                               const std::string& pref_name) {
-  DCHECK_EQ(pref_name, refresh_pref_name_);
+void CloudPolicySubsystem::OnRefreshPrefChanged() {
   PrefService* local_state = g_browser_process->local_state();
-  DCHECK_EQ(service, local_state);
   UpdatePolicyRefreshRate(local_state->GetInteger(refresh_pref_name_));
 }
 
 void CloudPolicySubsystem::ScheduleServiceInitialization(
     int64 delay_milliseconds) {
   if (device_management_service_.get())
     device_management_service_->ScheduleInitialization(delay_milliseconds);
 }
 
 
@@ skipping 18 matching lines @@
 CloudPolicyCacheBase* CloudPolicySubsystem::GetCloudPolicyCacheBase() const {
   return cloud_policy_cache_.get();
 }
 
 CloudPolicySubsystem::CloudPolicySubsystem()
     : refresh_pref_name_(NULL),
       data_store_(NULL) {
 }
 
 }  // namespace policy