Re-land 16025005 with fix for statics perf issue

media/midi/midi_port_info.h

+// Copyright (c) 2013 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 MEDIA_MIDI_MIDI_PORT_INFO_H_
+#define MEDIA_MIDI_MIDI_PORT_INFO_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "media/base/media_export.h"
+
+namespace media {
+
+struct MEDIA_EXPORT MIDIPortInfo {
+  MIDIPortInfo();
+  MIDIPortInfo(const std::string& in_id,
+               const std::string& in_manufacturer,
+               const std::string& in_name,
+               const std::string& in_version);
+
+  MIDIPortInfo(const MIDIPortInfo& info);
+  ~MIDIPortInfo();
+
+  std::string id;
+  std::string manufacturer;
+  std::string name;
+  std::string version;
+};
+
+typedef std::vector<MIDIPortInfo> MIDIPortInfoList;
+
+}  // namespace media
+
+#endif  // MEDIA_MIDI_MIDI_PORT_INFO_H_