Revert of Add PrefStore::GetValues

chrome/browser/supervised_user/supervised_user_pref_store.cc

 // Copyright 2014 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/supervised_user/supervised_user_pref_store.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 69 matching lines @@
         content::Source<Profile>(
           supervised_user_settings_service->GetProfile()));
   }
 }
 
 bool SupervisedUserPrefStore::GetValue(const std::string& key,
                                        const base::Value** value) const {
   return prefs_->GetValue(key, value);
 }
 
-std::unique_ptr<base::DictionaryValue> SupervisedUserPrefStore::GetValues()
-    const {
-  return prefs_->AsDictionaryValue();
-}
-
 void SupervisedUserPrefStore::AddObserver(PrefStore::Observer* observer) {
   observers_.AddObserver(observer);
 }
 
 void SupervisedUserPrefStore::RemoveObserver(PrefStore::Observer* observer) {
   observers_.RemoveObserver(observer);
 }
 
 bool SupervisedUserPrefStore::HasObservers() const {
   return observers_.might_have_observers();
@@ skipping 84 matching lines @@
 }
 
 // Callback to unsubscribe from the supervised user settings service.
 void SupervisedUserPrefStore::Observe(
     int type,
     const content::NotificationSource& src,
     const content::NotificationDetails& details) {
   DCHECK_EQ(chrome::NOTIFICATION_PROFILE_DESTROYED, type);
   user_settings_subscription_.reset();
 }