Introduce PrefRegistrySyncable, simplifying PrefServiceSyncable.

chrome/browser/custom_handlers/protocol_handler_registry.h

 // 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.
 
 #ifndef CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_
 #define CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/browser/shell_integration.h"
 #include "chrome/common/custom_handlers/protocol_handler.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_job.h"
 #include "net/url_request/url_request_job_factory.h"
 
-class PrefServiceSyncable;
+class PrefRegistrySyncable;
 
 // This is where handlers for protocols registered with
 // navigator.registerProtocolHandler() are registered. Each Profile owns an
 // instance of this class, which is initialized on browser start through
 // Profile::InitRegisteredProtocolHandlers(), and they should be the only
 // instances of this class.
 class ProtocolHandlerRegistry : public ProfileKeyedService {
 
  public:
   // Provides notification of when the OS level user agent settings
@@ skipping 200 matching lines @@
 
   // Puts this registry in the disabled state - registered protocol handlers
   // will not handle requests.
   void Disable();
 
   // This is called by the UI thread when the system is shutting down. This
   // does finalization which must be done on the UI thread.
   virtual void Shutdown() OVERRIDE;
 
   // Registers the preferences that we store registered protocol handlers in.
-  static void RegisterUserPrefs(PrefServiceSyncable* prefService);
+  static void RegisterUserPrefs(PrefRegistrySyncable* registry);
 
   bool enabled() const { return enabled_; }
 
   // Add a predefined protocol handler. This has to be called before the first
   // load command was issued, otherwise the command will be ignored.
   void AddPredefinedHandler(const ProtocolHandler& handler);
 
  private:
   friend class base::DeleteHelper<ProtocolHandlerRegistry>;
   friend struct content::BrowserThread::DeleteOnThread<
@@ skipping 76 matching lines @@
 
   // Copy of registry data for use on the IO thread. Changes to the registry
   // are posted to the IO thread where updates are applied to this object.
   scoped_refptr<IOThreadDelegate> io_thread_delegate_;
 
   DefaultClientObserverList default_client_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ProtocolHandlerRegistry);
 };
 #endif  // CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_