Change the copyright from Chromium OS to Chromium.

ui/file_manager/zip_archiver/cpp/compressor_io_javascript_stream.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_io_javascript_stream.h"
 
 #include <limits>
 #include <thread>
 
 #include "ppapi/cpp/logging.h"
 
@@ skipping 148 matching lines @@
     memcpy(destination_buffer_, array_buffer_data, read_bytes);
     array_buffer->Unmap();
   }
 
   read_bytes_ = read_bytes;
   available_data_ = true;
   pthread_cond_signal(&available_data_cond_);
   pthread_mutex_unlock(&shared_state_lock_);
   return read_bytes;
 }