Basic media tracks implementation for media stream parsers

media/base/media_track.cc

+// Copyright (c) 2016 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.
+
+#include "media/base/media_track.h"
+
+namespace media {
+
+MediaTrack::MediaTrack(Type type,
+                       const std::string& id,
+                       const std::string& kind,
+                       const std::string& label,
+                       const std::string& lang)
+    : type_(type), id_(id), kind_(kind), label_(label), language_(lang) {}
+
+MediaTrack::~MediaTrack() {}
+
+}  // namespace media