Revert of Add PrefStore::GetValues

components/prefs/default_pref_store.cc

 // 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.
 
 #include "components/prefs/default_pref_store.h"
 
 #include <utility>
 
 #include "base/logging.h"
 
 using base::Value;
 
 DefaultPrefStore::DefaultPrefStore() {}
 
 bool DefaultPrefStore::GetValue(const std::string& key,
                                 const Value** result) const {
   return prefs_.GetValue(key, result);
 }
 
-std::unique_ptr<base::DictionaryValue> DefaultPrefStore::GetValues() const {
-  return prefs_.AsDictionaryValue();
-}
-
 void DefaultPrefStore::AddObserver(PrefStore::Observer* observer) {
   observers_.AddObserver(observer);
 }
 
 void DefaultPrefStore::RemoveObserver(PrefStore::Observer* observer) {
   observers_.RemoveObserver(observer);
 }
 
 bool DefaultPrefStore::HasObservers() const {
   return observers_.might_have_observers();
@@ skipping 19 matching lines @@
 
 DefaultPrefStore::const_iterator DefaultPrefStore::begin() const {
   return prefs_.begin();
 }
 
 DefaultPrefStore::const_iterator DefaultPrefStore::end() const {
   return prefs_.end();
 }
 
 DefaultPrefStore::~DefaultPrefStore() {}