Remove use of deprecated base::ListValue::Append(Value*) overload in //chrome/browser/chromeos

chrome/browser/chromeos/ownership/owner_settings_service_chromeos.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/chromeos/ownership/owner_settings_service_chromeos.h"
 
 #include <keyhi.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 263 matching lines @@
 
 bool OwnerSettingsServiceChromeOS::AppendToList(const std::string& setting,
                                                 const base::Value& value) {
   DCHECK(thread_checker_.CalledOnValidThread());
   const base::Value* old_value = CrosSettings::Get()->GetPref(setting);
   if (old_value && !old_value->IsType(base::Value::TYPE_LIST))
     return false;
   std::unique_ptr<base::ListValue> new_value(
       old_value ? static_cast<const base::ListValue*>(old_value)->DeepCopy()
                 : new base::ListValue());
-  new_value->Append(value.DeepCopy());
+  new_value->Append(value.CreateDeepCopy());
   return Set(setting, *new_value);
 }
 
 bool OwnerSettingsServiceChromeOS::RemoveFromList(const std::string& setting,
                                                   const base::Value& value) {
   DCHECK(thread_checker_.CalledOnValidThread());
   const base::Value* old_value = CrosSettings::Get()->GetPref(setting);
   if (old_value && !old_value->IsType(base::Value::TYPE_LIST))
     return false;
   std::unique_ptr<base::ListValue> new_value(
@@ skipping 434 matching lines @@
 
 void OwnerSettingsServiceChromeOS::ReportStatusAndContinueStoring(
     bool success) {
   store_settings_factory_.InvalidateWeakPtrs();
   FOR_EACH_OBSERVER(OwnerSettingsService::Observer, observers_,
                     OnSignedPolicyStored(success));
   StorePendingChanges();
 }
 
 }  // namespace chromeos