Extract abstract base to API directory for ProfileSyncService.

chrome/browser/sync/profile_sync_service_factory.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/sync/profile_sync_service_factory.h"
 
 #include "base/command_line.h"
 #include "base/memory/singleton.h"
 #include "chrome/browser/autofill/personal_data_manager_factory.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
@@ skipping 23 matching lines @@
 // static
 ProfileSyncService* ProfileSyncServiceFactory::GetForProfile(
     Profile* profile) {
   if (!ProfileSyncService::IsSyncEnabled())
     return NULL;
 
   return static_cast<ProfileSyncService*>(
       GetInstance()->GetServiceForProfile(profile, true));
 }
 
+// static
+ProfileSyncServiceBase* ProfileSyncServiceBase::ForContext(
+    content::BrowserContext* context) {
+  return ProfileSyncServiceFactory::GetForProfile(
+      static_cast<Profile*>(context));
+}
+
 ProfileSyncServiceFactory::ProfileSyncServiceFactory()
     : ProfileKeyedServiceFactory("ProfileSyncService",
                                  ProfileDependencyManager::GetInstance()) {
 
   // The ProfileSyncService depends on various SyncableServices being around
   // when it is shut down.  Specify those dependencies here to build the proper
   // destruction order.
   DependsOn(TemplateURLServiceFactory::GetInstance());
   DependsOn(PersonalDataManagerFactory::GetInstance());
 #if defined(ENABLE_THEMES)
@@ skipping 41 matching lines @@
 
   pss->factory()->RegisterDataTypes(pss);
   pss->Initialize();
   return pss;
 }
 
 // static
 bool ProfileSyncServiceFactory::HasProfileSyncService(Profile* profile) {
   return GetInstance()->GetServiceForProfile(profile, false) != NULL;
 }