move V2 classes in chrome/engine to syncer_v2 namespace

sync/test/engine/injectable_sync_context_proxy.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/test/engine/injectable_sync_context_proxy.h"
 
 #include "sync/engine/model_type_sync_proxy_impl.h"
 #include "sync/engine/model_type_sync_worker.h"
 
-namespace syncer {
+namespace syncer_v2 {
 
 InjectableSyncContextProxy::InjectableSyncContextProxy(
     ModelTypeSyncWorker* worker)
     : is_worker_connected_(false), worker_(worker) {
 }
 
 InjectableSyncContextProxy::~InjectableSyncContextProxy() {
 }
 
 void InjectableSyncContextProxy::ConnectTypeToSync(
     syncer::ModelType type,
-    const syncer_v2::DataTypeState& data_type_state,
-    const syncer_v2::UpdateResponseDataList& response_list,
-    const base::WeakPtr<syncer::ModelTypeSyncProxyImpl>& type_sync_proxy) {
+    const DataTypeState& data_type_state,
+    const UpdateResponseDataList& response_list,
+    const base::WeakPtr<ModelTypeSyncProxyImpl>& type_sync_proxy) {
   // This class is allowed to participate in only one connection.
   DCHECK(!is_worker_connected_);
   is_worker_connected_ = true;
 
   // Hands off ownership of our member to the type_sync_proxy, while keeping
   // an unsafe pointer to it.  This is why we can only connect once.
   scoped_ptr<ModelTypeSyncWorker> worker(worker_);
 
   type_sync_proxy->OnConnect(worker.Pass());
 }
 
 void InjectableSyncContextProxy::Disconnect(syncer::ModelType type) {
   // This should delete the worker, but we don't own it.
   worker_ = NULL;
 }
 
-scoped_ptr<syncer_v2::SyncContextProxy> InjectableSyncContextProxy::Clone()
-    const {
+scoped_ptr<SyncContextProxy> InjectableSyncContextProxy::Clone() const {
   // This confuses ownership.  We trust that our callers are well-behaved.
-  return scoped_ptr<syncer_v2::SyncContextProxy>(
-      new InjectableSyncContextProxy(worker_));
+  return scoped_ptr<SyncContextProxy>(new InjectableSyncContextProxy(worker_));
 }
 
 ModelTypeSyncWorker* InjectableSyncContextProxy::GetWorker() {
   return worker_;
 }
 
 }  // namespace syncer