Update sync API to support attachments.

sync/api/attachments/fake_attachment_store_unittest.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 "sync/api/attachments/fake_attachment_store.h"
 
 #include "base/bind.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 80 matching lines @@
   store.Read(id_written, read_callback);
   ClearAndPumpLoop();
   EXPECT_EQ(result, AttachmentStore::SUCCESS);
   EXPECT_EQ(id_written, attachment->GetId());
   EXPECT_EQ(some_data, attachment->GetData());
 }
 
 TEST_F(FakeAttachmentStoreTest, Read_NotFound) {
   FakeAttachmentStore store(base::MessageLoopProxy::current());
   scoped_refptr<base::RefCountedString> some_data(new base::RefCountedString);
-  scoped_ptr<Attachment> some_attachment = Attachment::Create(some_data);
-  AttachmentId some_id = some_attachment->GetId();
+  Attachment some_attachment = Attachment::Create(some_data);
+  AttachmentId some_id = some_attachment.GetId();
   store.Read(some_id, read_callback);
   ClearAndPumpLoop();
   EXPECT_EQ(result, AttachmentStore::NOT_FOUND);
   EXPECT_EQ(NULL, attachment.get());
 }
 
 TEST_F(FakeAttachmentStoreTest, Drop) {
   FakeAttachmentStore store(base::MessageLoopProxy::current());
   scoped_refptr<base::RefCountedString> some_data(new base::RefCountedString);
   some_data->data() = kTestData;
@@ skipping 15 matching lines @@
   store.Drop(id_written, drop_callback);
   ClearAndPumpLoop();
   EXPECT_EQ(result, AttachmentStore::NOT_FOUND);
 
   store.Read(id_written, read_callback);
   ClearAndPumpLoop();
   EXPECT_EQ(result, AttachmentStore::NOT_FOUND);
 }
 
 }  // namespace syncer