Update monet.

mojo/converters/base/base_type_converters.h

Index: mojo/converters/base/base_type_converters.h
diff --git a/mojo/converters/base/base_type_converters.h b/mojo/converters/base/base_type_converters.h
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+++ b/mojo/converters/base/base_type_converters.h
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+// Copyright 2015 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 MOJO_CONVERTERS_BASE_BASE_TYPE_CONVERTERS_H_
+#define MOJO_CONVERTERS_BASE_BASE_TYPE_CONVERTERS_H_
+
+#include "base/strings/string16.h"
+#include "base/strings/string_piece.h"
+#include "mojo/public/cpp/bindings/array.h"
+#include "mojo/public/cpp/bindings/string.h"
+#include "mojo/public/cpp/bindings/type_converter.h"
+
+namespace mojo {
+
+template <>
+struct TypeConverter<String, base::StringPiece> {
+  static String Convert(const base::StringPiece& input);
+};
+
+template <>
+struct TypeConverter<base::StringPiece, String> {
+  static base::StringPiece Convert(const String& input);
+};
+
+template <>
+struct TypeConverter<String, base::string16> {
+  static String Convert(const base::string16& input);
+};
+
+template <>
+struct TypeConverter<base::string16, String> {
+  static base::string16 Convert(const String& input);
+};
+
+}  // namespace mojo
+
+#endif  // MOJO_CONVERTERS_BASE_BASE_TYPE_CONVERTERS_H_