Introduce PrefRegistrySyncable, simplifying PrefServiceSyncable.

chrome/browser/ui/webui/ntp/android/promo_handler.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/ui/webui/ntp/android/promo_handler.h"
 
 #include "base/logging.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/android/intent_helper.h"
+#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/signin/signin_manager.h"
 #include "chrome/browser/sync/glue/session_model_associator.h"
 #include "chrome/browser/sync/glue/synced_session.h"
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/browser/web_resource/notification_promo.h"
 #include "chrome/browser/web_resource/notification_promo_mobile_ntp.h"
@@ skipping 91 matching lines @@
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback("promoActionTriggered",
       base::Bind(&PromoHandler::HandlePromoActionTriggered,
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback("promoDisabled",
       base::Bind(&PromoHandler::HandlePromoDisabled,
                  base::Unretained(this)));
 }
 
 // static
-void PromoHandler::RegisterUserPrefs(PrefServiceSyncable* prefs) {
-  prefs->RegisterBooleanPref(prefs::kNtpPromoDesktopSessionFound,
-                             false,
-                             PrefServiceSyncable::UNSYNCABLE_PREF);
+void PromoHandler::RegisterUserPrefs(PrefRegistrySyncable* registry) {
+  registry->RegisterBooleanPref(prefs::kNtpPromoDesktopSessionFound,
+                                false,
+                                PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 
 void PromoHandler::Observe(int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   if (chrome::NOTIFICATION_PROMO_RESOURCE_STATE_CHANGED == type ||
       chrome::NOTIFICATION_SYNC_CONFIGURE_DONE == type ||
       chrome::NOTIFICATION_FOREIGN_SESSION_UPDATED == type) {
     // A change occurred to one of the preferences we care about
     CheckDesktopSessions();
@@ skipping 186 matching lines @@
         sessions[i]->device_type;
     if (device_type == browser_sync::SyncedSession::TYPE_WIN ||
         device_type == browser_sync::SyncedSession::TYPE_MACOSX ||
         device_type == browser_sync::SyncedSession::TYPE_LINUX) {
       // Found a desktop session: write out the pref.
       prefs->SetBoolean(prefs::kNtpPromoDesktopSessionFound, true);
       return;
     }
   }
 }