[Sync] Move sync/{internal_api,syncable} into syncer namespace

sync/syncable/entry_kernel.h

 // Copyright (c) 2012 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.
 
 #ifndef SYNC_SYNCABLE_ENTRY_KERNEL_H_
 #define SYNC_SYNCABLE_ENTRY_KERNEL_H_
 #pragma once
 
 #include "base/time.h"
 #include "base/values.h"
 #include "sync/internal_api/public/syncable/model_type.h"
 #include "sync/internal_api/public/util/immutable.h"
 #include "sync/protocol/sync.pb.h"
 #include "sync/syncable/metahandle_set.h"
 #include "sync/syncable/syncable_id.h"
 #include "sync/util/time.h"
 
+namespace syncer {
 namespace syncable {
 
 // Things you need to update if you change any of the fields below:
 //  - EntryKernel struct in this file
 //  - syncable_columns.h
 //  - syncable_enum_conversions{.h,.cc,_unittest.cc}
 //  - EntryKernel::EntryKernel(), EntryKernel::ToValue(), operator<<
 //    for Entry in syncable.cc
 //  - BindFields() and UnpackEntry() in directory_backing_store.cc
 //  - TestSimpleFieldsPreservedDuringSaveChanges in syncable_unittest.cc
@@ skipping 284 matching lines @@
 
 // Caller owns the return value.
 base::DictionaryValue* EntryKernelMutationToValue(
     const EntryKernelMutation& mutation);
 
 // Caller owns the return value.
 base::ListValue* EntryKernelMutationMapToValue(
     const EntryKernelMutationMap& mutations);
 
 }  // namespace syncable
+}  // namespace syncer
 
 #endif // SYNC_SYNCABLE_ENTRY_KERNEL_H_