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diff --git a/libelffile/elf/xz_utils.h b/libelffile/elf/xz_utils.h
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+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBELFFILE_ELF_XZ_UTILS_H_
+#define ART_LIBELFFILE_ELF_XZ_UTILS_H_
+
+#include <vector>
+
+#include "base/array_ref.h"
+
+namespace art {
+
+void XzCompress(ArrayRef<const uint8_t> src, std::vector<uint8_t>* dst);
+void XzDecompress(ArrayRef<const uint8_t> src, std::vector<uint8_t>* dst);
+
+} // namespace art
+
+#endif // ART_LIBELFFILE_ELF_XZ_UTILS_H_