Componentize PrefSyncableService and support classes.

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/location.h"
 #include "base/prefs/pref_service.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/thread_task_runner_handle.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/notifications/notification.h"
-#include "chrome/browser/prefs/pref_service_syncable.h"
 #include "chrome/browser/prefs/pref_service_syncable_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser_navigator.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/pref_registry/pref_registry_syncable.h"
+#include "components/syncable_prefs/pref_service_syncable.h"
 #include "grit/theme_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/message_center/message_center.h"
 #include "ui/message_center/notification.h"
 #include "ui/message_center/notification_delegate.h"
 #include "ui/message_center/notification_types.h"
 
 const int ExtensionWelcomeNotification::kRequestedShowTimeDays = 14;
 const char ExtensionWelcomeNotification::kChromeNowExtensionID[] =
@@ skipping 313 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());
 }