Remove dependency of PrefSyncableService on Profile.

chrome/browser/prefs/pref_service_syncable.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_PREFS_PREF_SERVICE_SYNCABLE_H_
 #define CHROME_BROWSER_PREFS_PREF_SERVICE_SYNCABLE_H_
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/prefs/pref_model_associator.h"
 #include "chrome/browser/prefs/synced_pref_observer.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 
 class PrefServiceSyncableObserver;
-class Profile;
 
 namespace syncer {
 class SyncableService;
 }
 
 // A PrefService that can be synced. Users are forced to declare
 // whether preferences are syncable or not when registering them to
 // this PrefService.
 class PrefServiceSyncable : public PrefService {
  public:
-  // PrefServiceSyncable is a PrefService with added integration for
-  // sync, and knowledge of how to create an incognito
-  // PrefService. For code that does not need to know about the sync
-  // integration, you should use only the plain PrefService type.
-  //
-  // For this reason, Profile does not expose an accessor for the
-  // PrefServiceSyncable type. Instead, you can use the utilities
-  // below to retrieve the PrefServiceSyncable (or its incognito
-  // version) from a Profile.
-  static PrefServiceSyncable* FromProfile(Profile* profile);
-  static PrefServiceSyncable* IncognitoFromProfile(Profile* profile);
-
   // You may wish to use PrefServiceFactory or one of its subclasses
   // for simplified construction.
   PrefServiceSyncable(
       PrefNotifierImpl* pref_notifier,
       PrefValueStore* pref_value_store,
       PersistentPrefStore* user_prefs,
       user_prefs::PrefRegistrySyncable* pref_registry,
       base::Callback<void(PersistentPrefStore::PrefReadError)>
           read_error_callback,
       bool async);
@@ skipping 57 matching lines @@
 
   PrefModelAssociator pref_sync_associator_;
   PrefModelAssociator priority_pref_sync_associator_;
 
   base::ObserverList<PrefServiceSyncableObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefServiceSyncable);
 };
 
 #endif  // CHROME_BROWSER_PREFS_PREF_SERVICE_SYNCABLE_H_