Remove most occurences of PrefRegistrySyncable::UNSYNCABLE_PREF

chrome/browser/notifications/extension_welcome_notification.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/notifications/extension_welcome_notification.h"
 
 #include "base/guid.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_service.h"
@@ skipping 200 matching lines @@
     }
   }
 }
 
 // static
 void ExtensionWelcomeNotification::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* prefs) {
   prefs->RegisterBooleanPref(prefs::kWelcomeNotificationDismissed,
                              false,
                              user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
-  prefs->RegisterBooleanPref(prefs::kWelcomeNotificationDismissedLocal,
-                             false,
-                             user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  prefs->RegisterBooleanPref(prefs::kWelcomeNotificationDismissedLocal, false);
   prefs->RegisterBooleanPref(prefs::kWelcomeNotificationPreviouslyPoppedUp,
-                             false,
-                             user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
-  prefs->RegisterInt64Pref(prefs::kWelcomeNotificationExpirationTimestamp,
-                           0,
-                           user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+                             false);
+  prefs->RegisterInt64Pref(prefs::kWelcomeNotificationExpirationTimestamp, 0);
 }
 
 message_center::MessageCenter*
 ExtensionWelcomeNotification::GetMessageCenter() const {
   return delegate_->GetMessageCenter();
 }
 
 void ExtensionWelcomeNotification::ShowWelcomeNotification(
     const base::string16& display_source,
     const PopUpRequest pop_up_request) {
@@ skipping 111 matching lines @@
       prefs::kWelcomeNotificationExpirationTimestamp,
       (delegate_->GetCurrentTime() +
           base::TimeDelta::FromDays(kRequestedShowTimeDays)).ToInternalValue());
 }
 
 bool ExtensionWelcomeNotification::IsWelcomeNotificationExpired() const {
   const base::Time expiration_timestamp = GetExpirationTimestamp();
   return !expiration_timestamp.is_null() &&
          (expiration_timestamp <= delegate_->GetCurrentTime());
 }