Move AttachmentStore ownership to datatype

sync/internal_api/public/attachments/attachment_service_impl.h

 // 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.
 
 #ifndef SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_SERVICE_IMPL_H_
 #define SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_SERVICE_IMPL_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
@@ skipping 15 matching lines @@
   // must be valid throughout AttachmentService lifetime.
   //
   // |attachment_uploader| is optional. If null, attachments will never be
   // uploaded to the sync server and |delegate|'s OnAttachmentUploaded will
   // never be invoked.
   //
   // |attachment_downloader| is optional. If null, attachments will never be
   // downloaded. Only attachments in |attachment_store| will be returned from
   // GetOrDownloadAttachments.
 
-  AttachmentServiceImpl(scoped_ptr<AttachmentStore> attachment_store,
+  AttachmentServiceImpl(scoped_refptr<AttachmentStore> attachment_store,
                         scoped_ptr<AttachmentUploader> attachment_uploader,
                         scoped_ptr<AttachmentDownloader> attachment_downloader,
                         Delegate* delegate);
   virtual ~AttachmentServiceImpl();
 
   // Create an AttachmentServiceImpl suitable for use in tests.
   static scoped_ptr<syncer::AttachmentService> CreateForTest();
 
   // AttachmentService implementation.
   virtual void GetOrDownloadAttachments(const AttachmentIdList& attachment_ids,
@@ skipping 15 matching lines @@
                 const AttachmentStore::Result& result);
   void WriteDone(const StoreCallback& callback,
                  const AttachmentStore::Result& result);
   void UploadDone(const AttachmentUploader::UploadResult& result,
                   const AttachmentId& attachment_id);
   void DownloadDone(const scoped_refptr<GetOrDownloadState>& state,
                     const AttachmentId& attachment_id,
                     const AttachmentDownloader::DownloadResult& result,
                     scoped_ptr<Attachment> attachment);
 
-  const scoped_ptr<AttachmentStore> attachment_store_;
+  scoped_refptr<AttachmentStore> attachment_store_;
 
   // May be null.
   const scoped_ptr<AttachmentUploader> attachment_uploader_;
 
   // May be null.
   const scoped_ptr<AttachmentDownloader> attachment_downloader_;
 
   // May be null.
   Delegate* delegate_;
 
   // Must be last data member.
   base::WeakPtrFactory<AttachmentServiceImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AttachmentServiceImpl);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_SERVICE_IMPL_H_