[Sync] Introduce AttachmentStoreForSync class

chrome/browser/sync/profile_sync_components_factory_impl.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 "base/command_line.h"
 #include "build/build_config.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/bookmarks/enhanced_bookmarks_features.h"
 #include "chrome/browser/dom_distiller/dom_distiller_service_factory.h"
 #include "chrome/browser/history/history_service_factory.h"
@@ skipping 623 matching lines @@
 TokenServiceProvider::GetTokenServiceTaskRunner() {
   return task_runner_;
 }
 
 OAuth2TokenService* TokenServiceProvider::GetTokenService() {
   return token_service_;
 }
 
 scoped_ptr<syncer::AttachmentService>
 ProfileSyncComponentsFactoryImpl::CreateAttachmentService(
-    scoped_ptr<syncer::AttachmentStore> attachment_store,
+    scoped_ptr<syncer::AttachmentStoreForSync> attachment_store,
     const syncer::UserShare& user_share,
     const std::string& store_birthday,
     syncer::ModelType model_type,
     syncer::AttachmentService::Delegate* delegate) {
   scoped_ptr<syncer::AttachmentUploader> attachment_uploader;
   scoped_ptr<syncer::AttachmentDownloader> attachment_downloader;
   // Only construct an AttachmentUploader and AttachmentDownload if we have sync
   // credentials. We may not have sync credentials because there may not be a
   // signed in sync user (e.g. sync is running in "backup" mode).
   if (!user_share.sync_credentials.email.empty() &&
@@ skipping 73 matching lines @@
       new TypedUrlModelAssociator(profile_sync_service,
                                   history_backend,
                                   error_handler);
   TypedUrlChangeProcessor* change_processor =
       new TypedUrlChangeProcessor(profile_,
                                   model_associator,
                                   history_backend,
                                   error_handler);
   return SyncComponents(model_associator, change_processor);
 }