Use Smart Lock preference instead of Chrome Password manager preference

chrome/browser/extensions/api/settings_private/prefs_util.cc

 // Copyright 2015 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/extensions/api/settings_private/prefs_util.h"
 
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "chrome/browser/extensions/settings_api_helpers.h"
@@ skipping 127 matching lines @@
   (*s_whitelist)[::prefs::kLocalDiscoveryNotificationsEnabled] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
 
   // Miscellaneous. TODO(stevenjb): categorize.
   (*s_whitelist)[::prefs::kEnableDoNotTrack] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)[::prefs::kApplicationLocale] =
       settings_private::PrefType::PREF_TYPE_STRING;
   (*s_whitelist)[::prefs::kNetworkPredictionOptions] =
       settings_private::PrefType::PREF_TYPE_NUMBER;
-  (*s_whitelist)[password_manager::prefs::kPasswordManagerSavingEnabled] =
+  (*s_whitelist)[password_manager::prefs::kCredentialsEnableService] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)[password_manager::prefs::kCredentialsEnableAutosignin] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)[::prefs::kSafeBrowsingEnabled] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)[::prefs::kSafeBrowsingExtendedReportingEnabled] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)[::prefs::kSearchSuggestEnabled] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)[spellcheck::prefs::kSpellCheckDictionaries] =
@@ skipping 574 matching lines @@
   if (pref_object.key == ::prefs::kDefaultSearchProviderEnabled)
     return GetExtensionOverridingSearchEngine(profile_);
 
   if (pref_object.key == proxy_config::prefs::kProxy)
     return GetExtensionOverridingProxy(profile_);
 
   return nullptr;
 }
 
 }  // namespace extensions