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diff --git a/common/error_code_utils.h b/common/error_code_utils.h
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+++ b/common/error_code_utils.h
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+//
+// Copyright (C) 2012 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 UPDATE_ENGINE_COMMON_ERROR_CODE_UTILS_H_
+#define UPDATE_ENGINE_COMMON_ERROR_CODE_UTILS_H_
+
+#include <string>
+
+#include "update_engine/common/error_code.h"
+
+namespace chromeos_update_engine {
+namespace utils {
+
+// Returns a string representation of the ErrorCodes (either the base
+// error codes or the bit flags) for logging purposes.
+std::string ErrorCodeToString(ErrorCode code);
+
+}  // namespace utils
+}  // namespace chromeos_update_engine
+
+#endif  // UPDATE_ENGINE_COMMON_ERROR_CODE_UTILS_H_