Revert of [Sync] Move //components/sync to the syncer namespace. (patchset #5 id:40001 of https://co

components/sync/core/model_type_store_backend.cc

 // Copyright 2015 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 "components/sync/core/model_type_store_backend.h"
 
 #include <utility>
 
 #include "base/files/file_path.h"
 #include "base/memory/ptr_util.h"
 #include "third_party/leveldatabase/env_chromium.h"
 #include "third_party/leveldatabase/src/helpers/memenv/memenv.h"
 #include "third_party/leveldatabase/src/include/leveldb/db.h"
 #include "third_party/leveldatabase/src/include/leveldb/env.h"
 #include "third_party/leveldatabase/src/include/leveldb/iterator.h"
 #include "third_party/leveldatabase/src/include/leveldb/options.h"
 #include "third_party/leveldatabase/src/include/leveldb/slice.h"
 #include "third_party/leveldatabase/src/include/leveldb/status.h"
 #include "third_party/leveldatabase/src/include/leveldb/write_batch.h"
 
-namespace syncer {
+namespace syncer_v2 {
 
 // static
 base::LazyInstance<ModelTypeStoreBackend::BackendMap>
     ModelTypeStoreBackend::backend_map_ = LAZY_INSTANCE_INITIALIZER;
 
 ModelTypeStoreBackend::ModelTypeStoreBackend(const std::string& path)
     : path_(path) {}
 
 ModelTypeStoreBackend::~ModelTypeStoreBackend() {
   backend_map_.Get().erase(path_);
@@ skipping 103 matching lines @@
 ModelTypeStore::Result ModelTypeStoreBackend::WriteModifications(
     std::unique_ptr<leveldb::WriteBatch> write_batch) {
   DFAKE_SCOPED_LOCK(push_pop_);
   DCHECK(db_);
   leveldb::Status status =
       db_->Write(leveldb::WriteOptions(), write_batch.get());
   return status.ok() ? ModelTypeStore::Result::SUCCESS
                      : ModelTypeStore::Result::UNSPECIFIED_ERROR;
 }
 
-}  // namespace syncer
+}  // namespace syncer_v2