Missed new files in last commit

src/platform/update_engine/gzip.h

+// Copyright (c) 2009 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 <string>
+#include <vector>
+
+namespace chromeos_update_engine {
+
+// Gzip compresses or decompresses the input to the output.
+// Returns true on success. If true, *out will point to a malloc()ed
+// buffer, which must be free()d by the caller.
+bool GzipCompressData(const char* const in, const size_t in_size,
+                      char** out, size_t* out_size);
+bool GzipDecompressData(const char* const in, const size_t in_size,
+                        char** out, size_t* out_size);
+
+// Helper functions:
+bool GzipDecompress(const std::vector<char>& in, std::vector<char>* out);
+bool GzipCompress(const std::vector<char>& in, std::vector<char>* out);
+bool GzipCompressString(const std::string& str, std::vector<char>* out);
+bool GzipDecompressString(const std::string& str, std::vector<char>* out);
+
+}  // namespace chromeos_update_engine {