Add mux-stream transport support in session description

remoting/protocol/name_value_map.h

+// Copyright (c) 2012 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.
+//
+// Helper functions that allow to map enum values to strings.
+
+namespace remoting {
+namespace protocol {
+
+template <typename T>
+struct NameMapElement {
+  const T value;
+  const char* const name;
+};
+
+template <typename T, size_t N>
+const char* ValueToName(const NameMapElement<T> (&map)[N], T value) {
+  for (size_t i = 0; i < N; ++i) {
+    if (map[i].value == value)
+      return map[i].name;
+  }
+  NOTREACHED();
+  return NULL;
+}
+
+template <typename T, size_t N>
+bool NameToValue(const NameMapElement<T> (&map)[N],
+                 const std::string& name,
+                 T* result) {
+  for (size_t i = 0; i < N; ++i) {
+    if (map[i].name == name) {
+      *result = map[i].value;
+      return true;
+    }
+  }
+  return false;
+}
+
+}  // namespace protocol
+}  // namespace remoting