Move non-API code out of sync/api/attachments/

sync/api/attachments/attachment_service_proxy_for_test.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/attachment_service_proxy_for_test.h"
-
-#include "base/message_loop/message_loop.h"
-#include "base/thread_task_runner_handle.h"
-#include "sync/api/attachments/attachment_service_impl.h"
-
-namespace syncer {
-
-AttachmentServiceProxyForTest::OwningCore::OwningCore(
-    scoped_ptr<AttachmentService> wrapped,
-    scoped_ptr<base::WeakPtrFactory<AttachmentService> > weak_ptr_factory)
-    : Core(weak_ptr_factory->GetWeakPtr()),
-      wrapped_(wrapped.Pass()),
-      weak_ptr_factory_(weak_ptr_factory.Pass()) {
-  DCHECK(wrapped_);
-}
-
-AttachmentServiceProxyForTest::OwningCore::~OwningCore() {
-}
-
-// Static.
-AttachmentServiceProxy AttachmentServiceProxyForTest::Create() {
-  scoped_ptr<AttachmentService> wrapped(AttachmentServiceImpl::CreateForTest());
-  // This class's base class, AttachmentServiceProxy, must be initialized with a
-  // WeakPtr to an AttachmentService.  Because the base class ctor must be
-  // invoked before any of this class's members are initialized, we create the
-  // WeakPtrFactory here and pass it to the ctor so that it may initialize its
-  // base class and own the WeakPtrFactory.
-  //
-  // We must pass by scoped_ptr because WeakPtrFactory has no copy constructor.
-  scoped_ptr<base::WeakPtrFactory<AttachmentService> > weak_ptr_factory(
-      new base::WeakPtrFactory<AttachmentService>(wrapped.get()));
-
-  scoped_refptr<Core> core_for_test(
-      new OwningCore(wrapped.Pass(), weak_ptr_factory.Pass()));
-
-  scoped_refptr<base::SequencedTaskRunner> runner(
-      base::ThreadTaskRunnerHandle::Get());
-  if (!runner) {
-    // Dummy runner for tests that don't care about AttachmentServiceProxy.
-    DVLOG(1) << "Creating dummy MessageLoop for AttachmentServiceProxy.";
-    base::MessageLoop loop;
-    // This works because |runner| takes a ref to the proxy.
-    runner = loop.message_loop_proxy();
-  }
-  return AttachmentServiceProxyForTest(runner, core_for_test);
-}
-
-AttachmentServiceProxyForTest::~AttachmentServiceProxyForTest() {
-}
-
-AttachmentServiceProxyForTest::AttachmentServiceProxyForTest(
-    const scoped_refptr<base::SequencedTaskRunner>& wrapped_task_runner,
-    const scoped_refptr<Core>& core)
-    : AttachmentServiceProxy(wrapped_task_runner, core) {
-}
-
-}  // namespace syncer