Remove PrefService::ScheduleSavePersistentPrefs and SavePersistentPrefs.

chrome/browser/prefs/pref_service.h

 // Copyright (c) 2011 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.
 
 // This provides a way to access the application's current preferences.
 
 #ifndef CHROME_BROWSER_PREFS_PREF_SERVICE_H_
 #define CHROME_BROWSER_PREFS_PREF_SERVICE_H_
 #pragma once
 
@@ skipping 136 matching lines @@
 
   // Reloads the data from file. This should only be called when the importer
   // is running during first run, and the main process may not change pref
   // values while the importer process is running. Returns true on success.
   bool ReloadPersistentPrefs();
 
   // Returns true if the preference for the given preference name is available
   // and is managed.
   bool IsManagedPreference(const char* pref_name) const;
 
-  // Writes the data to disk. The return value only reflects whether
-  // serialization was successful; we don't know whether the data actually made
-  // it on disk (since it's on a different thread).  This should only be used if
-  // we need to save immediately (basically, during shutdown).  Otherwise, you
-  // should use ScheduleSavePersistentPrefs.
-  bool SavePersistentPrefs();
-
-  // Serializes the data and schedules save using ImportantFileWriter.
-  void ScheduleSavePersistentPrefs();
-
-  // Lands pending writes to disk.
+  // Lands pending writes to disk. This should only be used if we need to save
+  // immediately (basically, during shutdown).
   void CommitPendingWrite();
 
   // Make the PrefService aware of a pref.
   // TODO(zea): split local state and profile prefs into their own subclasses.
   // ---------- Local state prefs  ----------
   void RegisterBooleanPref(const char* path, bool default_value);
   void RegisterIntegerPref(const char* path, int default_value);
   void RegisterDoublePref(const char* path, double default_value);
   void RegisterStringPref(const char* path, const std::string& default_value);
   void RegisterFilePathPref(const char* path, const FilePath& default_value);
@@ skipping 212 matching lines @@
   // of registered preferences are.
   mutable PreferenceSet prefs_;
 
   // The model associator that maintains the links with the sync db.
   scoped_ptr<PrefModelAssociator> pref_sync_associator_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefService);
 };
 
 #endif  // CHROME_BROWSER_PREFS_PREF_SERVICE_H_