Remove PrefService::ScheduleSavePersistentPrefs and SavePersistentPrefs.

chrome/browser/prefs/overlay_user_pref_store.cc

 // 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.
 
 #include "chrome/browser/prefs/incognito_user_pref_store.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 
 OverlayUserPrefStore::OverlayUserPrefStore(
@@ skipping 96 matching lines @@
   return PersistentPrefStore::PREF_READ_ERROR_NONE;
 }
 
 void OverlayUserPrefStore::ReadPrefsAsync(
     ReadErrorDelegate* error_delegate_raw) {
   scoped_ptr<ReadErrorDelegate> error_delegate(error_delegate_raw);
   // We do not read intentionally.
   OnInitializationCompleted(true);
 }
 
-bool OverlayUserPrefStore::WritePrefs() {
-  // We do not write our content intentionally.
-  return true;
-}
-
-void OverlayUserPrefStore::ScheduleWritePrefs() {
-  underlay_->ScheduleWritePrefs();
-  // We do not write our content intentionally.
-}
-
 void OverlayUserPrefStore::CommitPendingWrite() {
   underlay_->CommitPendingWrite();
   // We do not write our content intentionally.
 }
 
 void OverlayUserPrefStore::ReportValueChanged(const std::string& key) {
   FOR_EACH_OBSERVER(PrefStore::Observer, observers_, OnPrefValueChanged(key));
 }
 
 void OverlayUserPrefStore::RegisterOverlayProperty(const std::string& key) {
@@ skipping 37 matching lines @@
   NamesMap::const_iterator i =
       overlay_to_underlay_names_map_.find(overlay_key);
   return i != overlay_to_underlay_names_map_.end() ? i->second : overlay_key;
 }
 
 bool OverlayUserPrefStore::ShallBeStoredInOverlay(
     const std::string& key) const {
   return overlay_to_underlay_names_map_.find(key) !=
       overlay_to_underlay_names_map_.end();
 }