diff --git a/chromeos/osrelease_reader.h b/chromeos/osrelease_reader.h
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+++ b/chromeos/osrelease_reader.h
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+// Copyright 2014 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.
+
+// Wrapper around /etc/os-release and /etc/os-release.d.
+// Standard fields can come from both places depending on how we set them. They
+// should always be accessed through this interface.
+
+#ifndef LIBCHROMEOS_CHROMEOS_OSRELEASE_READER_H_
+#define LIBCHROMEOS_CHROMEOS_OSRELEASE_READER_H_
+
+#include <string>
+
+#include <chromeos/chromeos_export.h>
+#include <chromeos/key_value_store.h>
+#include <gtest/gtest_prod.h>
+
+namespace chromeos {
+
+class CHROMEOS_EXPORT OsReleaseReader {
+ public:
+  // Create an empty reader
+  OsReleaseReader() = default;
+
+  // Loads the key=value pairs from either /etc/os-release.d/<KEY> or
+  // /etc/os-release.
+  // Returns false on errors.
+  bool Load();
+
+  // Same as the private Load method.
+  // This need to be public so that services can use it in testing mode (for
+  // autotest tests for example).
+  // This should not be used in production so suffix it with TestingOnly to
+  // make it obvious.
+  bool LoadTestingOnly(const base::FilePath& root_dir);
+
+  // Getter for the given key. Returns whether the key was found on the store.
+  bool GetString(const std::string& key, std::string* value) const;
+
+ private:
+  // The map storing all the key-value pairs.
+  KeyValueStore store_;
+
+  // os-release can be lazily loaded if need be.
+  bool initialized_;
+
+  // Load the data from a given root_dir. Return false on errors.
+  CHROMEOS_PRIVATE bool Load(const base::FilePath& root_dir);
+
+  DISALLOW_COPY_AND_ASSIGN(OsReleaseReader);
+};
+
+}  // namespace chromeos
+
+#endif  // LIBCHROMEOS_CHROMEOS_OSRELEASE_READER_H_