Revert of Refactor FakeAttachmentStore

sync/internal_api/attachments/attachment_store_handle.cc

Index: sync/internal_api/attachments/attachment_store_handle.cc
diff --git a/sync/internal_api/attachments/attachment_store_handle.cc b/sync/internal_api/attachments/attachment_store_handle.cc
deleted file mode 100644
index d964c03442b5ca3ee723a9e65f5969d1304e5ff3..0000000000000000000000000000000000000000
--- a/sync/internal_api/attachments/attachment_store_handle.cc
+++ /dev/null
@@ -1,57 +0,0 @@
-// 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/internal_api/public/attachments/attachment_store_handle.h"
-
-#include "base/bind.h"
-#include "base/location.h"
-#include "base/sequenced_task_runner.h"
-#include "sync/api/attachments/attachment.h"
-
-namespace syncer {
-
-AttachmentStoreHandle::AttachmentStoreHandle(
-    scoped_ptr<AttachmentStoreBase> backend,
-    const scoped_refptr<base::SequencedTaskRunner>& backend_task_runner)
-    : backend_(backend.Pass()), backend_task_runner_(backend_task_runner) {
-  DCHECK(backend_);
-  DCHECK(backend_task_runner_.get());
-}
-
-AttachmentStoreHandle::~AttachmentStoreHandle() {
-  DCHECK(backend_);
-  backend_task_runner_->DeleteSoon(FROM_HERE, backend_.release());
-}
-
-void AttachmentStoreHandle::Read(const AttachmentIdList& ids,
-                                 const ReadCallback& callback) {
-  DCHECK(CalledOnValidThread());
-  backend_task_runner_->PostTask(FROM_HERE,
-                                 base::Bind(&AttachmentStoreBase::Read,
-                                            base::Unretained(backend_.get()),
-                                            ids,
-                                            callback));
-}
-
-void AttachmentStoreHandle::Write(const AttachmentList& attachments,
-                                  const WriteCallback& callback) {
-  DCHECK(CalledOnValidThread());
-  backend_task_runner_->PostTask(FROM_HERE,
-                                 base::Bind(&AttachmentStoreBase::Write,
-                                            base::Unretained(backend_.get()),
-                                            attachments,
-                                            callback));
-}
-
-void AttachmentStoreHandle::Drop(const AttachmentIdList& ids,
-                                 const DropCallback& callback) {
-  DCHECK(CalledOnValidThread());
-  backend_task_runner_->PostTask(FROM_HERE,
-                                 base::Bind(&AttachmentStoreBase::Drop,
-                                            base::Unretained(backend_.get()),
-                                            ids,
-                                            callback));
-}
-
-}  // namespace syncer