Use PrefChangeRegistrar everywhere

chrome/browser/net/chrome_url_request_context.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.
 
 #ifndef CHROME_BROWSER_NET_CHROME_URL_REQUEST_CONTEXT_H_
 #define CHROME_BROWSER_NET_CHROME_URL_REQUEST_CONTEXT_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
 #include "base/linked_ptr.h"
 #include "chrome/browser/appcache/chrome_appcache_service.h"
 #include "chrome/browser/chrome_blob_storage_context.h"
 #include "chrome/browser/file_system/file_system_host_context.h"
 #include "chrome/browser/host_content_settings_map.h"
 #include "chrome/browser/host_zoom_map.h"
 #include "chrome/browser/io_thread.h"
 #include "chrome/browser/net/chrome_cookie_policy.h"
+#include "chrome/browser/prefs/pref_change_registrar.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_icon_set.h"
 #include "chrome/common/net/url_request_context_getter.h"
 #include "chrome/common/notification_registrar.h"
 #include "net/base/cookie_monster.h"
 #include "net/base/cookie_policy.h"
 #include "net/url_request/url_request_context.h"
 #include "webkit/database/database_tracker.h"
 
@@ skipping 343 matching lines @@
 
   // These methods simply forward to the corresponding method on
   // ChromeURLRequestContext.
   void OnAcceptLanguageChange(const std::string& accept_language);
   void OnDefaultCharsetChange(const std::string& default_charset);
 
   // Saves the cookie store to |result| and signals |completion|.
   void GetCookieStoreAsyncHelper(base::WaitableEvent* completion,
                                  net::CookieStore** result);
 
-  // Access only from the UI thread.
-  PrefService* prefs_;
+  PrefChangeRegistrar registrar_;
 
   // Deferred logic for creating a ChromeURLRequestContext.
   // Access only from the IO thread.
   scoped_ptr<ChromeURLRequestContextFactory> factory_;
 
   // NULL if not yet initialized. Otherwise, it is the URLRequestContext
   // instance that was lazilly created by GetURLRequestContext.
   // Access only from the IO thread.
   scoped_refptr<URLRequestContext> url_request_context_;
 
@@ skipping 53 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ChromeURLRequestContextFactory);
 };
 
 // Creates a proxy configuration from proxy-related preferences fetched
 // from |pref_service|. The relevant preferences in |pref_service| are
 // initialized from the process' command line or by applicable proxy policies.
 net::ProxyConfig* CreateProxyConfig(const PrefService* pref_service);
 
 #endif  // CHROME_BROWSER_NET_CHROME_URL_REQUEST_CONTEXT_H_