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

sync/syncable/write_transaction_info.cc

 // 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.
 
 #include "sync/syncable/write_transaction_info.h"
 
 #include "base/string_number_conversions.h"
 
+namespace syncer {
 namespace syncable {
 
 WriteTransactionInfo::WriteTransactionInfo(
     int64 id,
     tracked_objects::Location location,
     WriterTag writer,
     ImmutableEntryKernelMutationMap mutations)
     : id(id),
       location_string(location.ToString()),
       writer(writer),
@@ skipping 18 matching lines @@
     mutations_value =
         Value::CreateStringValue(
             base::Uint64ToString(static_cast<uint64>(mutations_size)) +
             " mutations");
   }
   dict->Set("mutations", mutations_value);
   return dict;
 }
 
 }  // namespace syncable
+}  // namespace syncer