Change the copyright from Chromium OS to Chromium.

ui/file_manager/zip_archiver/unpacker-test/cpp/volume_archive_libarchive_test.cc

-// Copyright 2014 The Chromium OS Authors. All rights reserved.
+// Copyright 2014 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 "volume_archive_libarchive.h"
 
 #include "fake_lib_archive.h"
 #include "fake_volume_reader.h"
 #include "testing/gtest/gtest.h"
 
 namespace {
@@ skipping 233 matching lines @@
 TEST_F(VolumeArchiveLibarchiveTest, CleanupAfterInitFailure) {
   EXPECT_TRUE(volume_archive->reader() != NULL);
 
   fake_lib_archive_config::fail_archive_read_open = true;
   EXPECT_TRUE(!volume_archive->Init(kEncoding));
 
   // Test Cleanup after Init failure.
   EXPECT_TRUE(volume_archive->Cleanup());
   EXPECT_EQ(NULL, volume_archive->reader());
 }