Remove most occurences of PrefRegistrySyncable::UNSYNCABLE_PREF

chrome/browser/web_resource/promo_resource_service.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 "chrome/browser/web_resource/promo_resource_service.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_registry_simple.h"
@@ skipping 53 matching lines @@
 void PromoResourceService::RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterStringPref(prefs::kNtpPromoResourceCacheUpdate, "0");
   NotificationPromo::RegisterPrefs(registry);
 }
 
 // static
 void PromoResourceService::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   // TODO(dbeam): This is registered only for migration; remove in M28
   // when all prefs have been cleared.  http://crbug.com/168887
-  registry->RegisterStringPref(
-      prefs::kNtpPromoResourceCacheUpdate,
-      "0",
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterStringPref(prefs::kNtpPromoResourceCacheUpdate, "0");
   NotificationPromo::RegisterProfilePrefs(registry);
 }
 
 // static
 void PromoResourceService::MigrateUserPrefs(PrefService* user_prefs) {
   user_prefs->ClearPref(prefs::kNtpPromoResourceCacheUpdate);
   NotificationPromo::MigrateUserPrefs(user_prefs);
 }
 
 PromoResourceService::PromoResourceService()
@@ skipping 81 matching lines @@
 }
 
 void PromoResourceService::Unpack(const base::DictionaryValue& parsed_json) {
   for (size_t i = 0; i < arraysize(kValidPromoTypes); ++i) {
     NotificationPromo notification_promo;
     notification_promo.InitFromJson(parsed_json, kValidPromoTypes[i]);
     if (notification_promo.new_notification())
       ScheduleNotification(notification_promo);
   }
 }