AU: Beginnings of delta support

src/platform/update_engine/decompressing_file_writer.h

 // Copyright (c) 2009 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.
 
-#ifndef UPDATE_ENGINE_DECOMPRESSING_FILE_WRITER_H__
-#define UPDATE_ENGINE_DECOMPRESSING_FILE_WRITER_H__
+#ifndef CHROMEOS_PLATFORM_UPDATE_ENGINE_DECOMPRESSING_FILE_WRITER_H__
+#define CHROMEOS_PLATFORM_UPDATE_ENGINE_DECOMPRESSING_FILE_WRITER_H__
 
 #include <zlib.h>
 #include "base/basictypes.h"
 #include "update_engine/file_writer.h"
 
 // GzipDecompressingFileWriter is an implementation of FileWriter. It will
 // gzip decompress all data that is passed via Write() onto another FileWriter,
 // which is responsible for actually writing the data out. Calls to
 // Open and Close are passed through to the other FileWriter.
 
@@ skipping 33 matching lines @@
 
   // This is for an optimization in Write(). We can keep this buffer around
   // in our class to avoid repeated calls to malloc().
   std::vector<char> buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(GzipDecompressingFileWriter);
 };
 
 }  // namespace chromeos_update_engine
 
-#endif  // UPDATE_ENGINE_DECOMPRESSING_FILE_WRITER_H__
+#endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_DECOMPRESSING_FILE_WRITER_H__