Use PrefChangeRegistrar everywhere

chrome/browser/host_content_settings_map.h

 // Copyright (c) 2010 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.
 
 // Maps hostnames to custom content settings.  Written on the UI thread and read
 // on any thread.  One instance per profile.
 
 #ifndef CHROME_BROWSER_HOST_CONTENT_SETTINGS_MAP_H_
 #define CHROME_BROWSER_HOST_CONTENT_SETTINGS_MAP_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/lock.h"
 #include "base/ref_counted.h"
 #include "chrome/browser/chrome_thread.h"
+#include "chrome/browser/prefs/pref_change_registrar.h"
 #include "chrome/common/content_settings.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
 
 class DictionaryValue;
 class GURL;
 class PrefService;
 class Profile;
 
 class HostContentSettingsMap
@@ skipping 247 matching lines @@
   // of the GetSettings functions in response, which would then lead to a
   // mutex deadlock.
   void NotifyObservers(const ContentSettingsDetails& details);
 
   void UnregisterObservers();
 
   // The profile we're associated with.
   Profile* profile_;
 
   NotificationRegistrar notification_registrar_;
+  PrefChangeRegistrar pref_change_registrar_;
 
   // Copies of the pref data, so that we can read it on the IO thread.
   ContentSettings default_content_settings_;
   HostContentSettings host_content_settings_;
 
   // Differences to the preference-stored host content settings for
   // off-the-record settings.
   HostContentSettings off_the_record_settings_;
 
   // Misc global settings.
@@ skipping 14 matching lines @@
 };
 
 // Stream operator so HostContentSettingsMap::Pattern can be used in
 // assertion statements.
 inline std::ostream& operator<<(
     std::ostream& out, const HostContentSettingsMap::Pattern& pattern) {
   return out << pattern.AsString();
 }
 
 #endif  // CHROME_BROWSER_HOST_CONTENT_SETTINGS_MAP_H_