Switch out the setup api for using the cabinet API directly....

chrome/installer/mini_installer/decompress.h

+// Copyright (c) 2011 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.
+
+#ifndef CHROME_INSTALLER_MINI_INSTALLER_DECOMPRESS_H_
+#define CHROME_INSTALLER_MINI_INSTALLER_DECOMPRESS_H_
+#pragma once
+
+namespace mini_installer {
+
+// Same as the tool, expand.exe.  Decompresses a file that was compressed
+// using Microsoft's MSCF compression algorithm.
+// |source| is the full path of the file to decompress and |destination|
+// is the full path of the target file.
+bool Expand(const wchar_t* source, const wchar_t* destination);
+
+}  // namespace mini_installer
+
+#endif  // CHROME_INSTALLER_MINI_INSTALLER_DECOMPRESS_H_