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

components/sync/core/non_blocking_sync_common.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 "components/sync/core/non_blocking_sync_common.h"
 
-namespace syncer {
+namespace syncer_v2 {
 
 CommitRequestData::CommitRequestData() {}
 
 CommitRequestData::CommitRequestData(const CommitRequestData& other) = default;
 
 CommitRequestData::~CommitRequestData() {}
 
 CommitResponseData::CommitResponseData() {}
 
 CommitResponseData::CommitResponseData(const CommitResponseData& other) =
     default;
 
 CommitResponseData::~CommitResponseData() {}
 
 UpdateResponseData::UpdateResponseData() {}
 
 UpdateResponseData::UpdateResponseData(const UpdateResponseData& other) =
     default;
 
 UpdateResponseData::~UpdateResponseData() {}
 
-}  // namespace syncer
+}  // namespace syncer_v2