Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/media/media_capture_devices_dispatcher.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_MEDIA_MEDIA_CAPTURE_DEVICES_DISPATCHER_H_
 #define CHROME_BROWSER_MEDIA_MEDIA_CAPTURE_DEVICES_DISPATCHER_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "content/public/common/media_stream_request.h"
 
-class PrefService;
+class PrefServiceSyncable;
 
 // This observer is owned by MediaInternals and deleted when MediaInternals
 // is deleted.
 class MediaCaptureDevicesDispatcher
     : public base::RefCountedThreadSafe<MediaCaptureDevicesDispatcher> {
  public:
   class Observer {
    public:
     // Handle an information update consisting of a up-to-date audio capture
     // device lists. This happens when a microphone is plugged in or unplugged.
     virtual void OnUpdateAudioDevices(
         const content::MediaStreamDevices& devices) {}
 
     // Handle an information update consisting of a up-to-date video capture
     // device lists. This happens when a camera is plugged in or unplugged.
     virtual void OnUpdateVideoDevices(
         const content::MediaStreamDevices& devices) {}
 
     virtual ~Observer() {}
   };
 
   MediaCaptureDevicesDispatcher();
 
   // Registers the preferences related to Media Stream default devices.
-  static void RegisterUserPrefs(PrefService* user_prefs);
+  static void RegisterUserPrefs(PrefServiceSyncable* user_prefs);
 
   // Called on IO thread when one audio device is plugged in or unplugged.
   void AudioCaptureDevicesChanged(const content::MediaStreamDevices& devices);
 
   // Called on IO thread when one video device is plugged in or unplugged.
   void VideoCaptureDevicesChanged(const content::MediaStreamDevices& devices);
 
   // Methods for observers. Called on UI thread.
   // Observers should add themselves on construction and remove themselves
   // on destruction.
@@ skipping 19 matching lines @@
 
   // A list of observers for the device update notifications.
   ObserverList<Observer> observers_;
 
   // Flag to indicate if device enumeration has been done/doing.
   // Only accessed on UI thread.
   bool devices_enumerated_;
 };
 
 #endif  // CHROME_BROWSER_MEDIA_MEDIA_CAPTURE_DEVICES_DISPATCHER_H_