Web MIDI: use midi_service.mojom for media::midi::PortState

media/midi/midi_service.mojom

 // Copyright 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.
 
 module midi.mojom;
 
 enum Result {
   NOT_INITIALIZED,
   OK,
   NOT_SUPPORTED,
   INITIALIZATION_ERROR,
 
   // New code should be inserted here so that existing members keep the same
   // assigned value. //tools/metrics/histograms/histograms.xml contains a enum
   // entry that should be consistent with enum Result.
 
   // |MAX| is used in content/common/media/midi_messages.h with
   // IPC_ENUM_TRAITS_MAX_VALUE macro. Keep the value up to date. Otherwise
   // a new value can not be passed to the renderer.
   // TODO(toyoshim): Remove |MAX| once IPC is replaced with Mojo.
   // http://crbug.com/582327
   MAX = INITIALIZATION_ERROR,
 };
 
-// TODO(toyoshim): MidiPortState, MidiPortInfo, and MidiService should be
+enum PortState {
+  DISCONNECTED,
+  CONNECTED,
+  OPENED,
+  // TODO(toyosim): Remove |LAST| once IPC is replaced with Mojo.
+  // http://crbug.com/582327
+  LAST = OPENED,
+};
+
+// TODO(toyoshim): MidiPortInfo, and MidiService should be
 // declared here.
 // http://crbug.com/582327