Change the copyright from Chromium OS to Chromium.

ui/file_manager/zip_archiver/cpp/compressor_archive_minizip.cc

-// Copyright 2017 The Chromium OS Authors. All rights reserved.
+// Copyright 2017 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 "compressor_archive_minizip.h"
 
 #include <cerrno>
 #include <cstring>
 
 #include "base/time/time.h"
 #include "ppapi/cpp/logging.h"
@@ skipping 222 matching lines @@
     return false /* Error */;
   }
   if (!has_error) {
     if (compressor_stream()->Flush() < 0) {
       set_error_message(compressor_archive_constants::kCloseArchiveError);
       return false /* Error */;
     }
   }
   return true /* Success */;
 }