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diff --git a/ipc/chromium/src/base/sys_string_conversions.h b/ipc/chromium/src/base/sys_string_conversions.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2006-2008 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.
+
+#ifndef BASE_SYS_STRING_CONVERSIONS_H_
+#define BASE_SYS_STRING_CONVERSIONS_H_
+
+// Provides system-dependent string type conversions for cases where it's
+// necessary to not use ICU. Generally, you should not need this in Chrome,
+// but it is used in some shared code. Dependencies should be minimal.
+
+#include <string>
+#include "base/basictypes.h"
+#include "base/string16.h"
+
+class StringPiece;
+
+namespace base {
+
+// Converts between wide and UTF-8 representations of a string. On error, the
+// result is system-dependent.
+std::string SysWideToUTF8(const std::wstring& wide);
+std::wstring SysUTF8ToWide(const StringPiece& utf8);
+
+// Converts between wide and the system multi-byte representations of a string.
+// DANGER: This will lose information and can change (on Windows, this can
+// change between reboots).
+std::string SysWideToNativeMB(const std::wstring& wide);
+std::wstring SysNativeMBToWide(const StringPiece& native_mb);
+
+} // namespace base
+
+#endif // BASE_SYS_STRING_CONVERSIONS_H_