Move files from zip_archiver/unpacker/ to zip_archiver/.

ui/file_manager/zip_archiver/cpp/volume_archive_libarchive.cc

 // Copyright 2014 The Chromium OS 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 "volume_archive_libarchive.h"
 
 #include <algorithm>
 #include <cerrno>
 #include <limits>
 
@@ skipping 334 matching lines @@
             decompressed_data_buffer_ +
                 volume_archive_constants::kDecompressBufferSize);
 
   return read_bytes;
 }
 
 void VolumeArchiveLibarchive::MaybeDecompressAhead() {
   if (decompressed_data_size_ == 0)
     DecompressData(last_read_data_offset_, last_read_data_length_);
 }