[Web MIDI] Use Android MIDI API.

media/midi/midi_device_android.h

Index: media/midi/midi_device_android.h
diff --git a/media/midi/midi_device_android.h b/media/midi/midi_device_android.h
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index 0000000000000000000000000000000000000000..4b4882301c2d2f92fa8348c5ae71c16bf0cd28ca
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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 MEDIA_MIDI_MIDI_DEVICE_ANDROID_H_
+#define MEDIA_MIDI_MIDI_DEVICE_ANDROID_H_
+
+#include <jni.h>
+#include <string>
+
+#include "base/android/scoped_java_ref.h"
+#include "base/memory/scoped_vector.h"
+#include "media/midi/midi_input_port_android.h"
+
+namespace media {
+namespace midi {
+
+class MidiOutputPortAndroid;
+
+class MidiDeviceAndroid final {
+ public:
+  MidiDeviceAndroid(JNIEnv* env,
+                    jobject raw_device,
+                    MidiInputPortAndroid::Delegate* delegate);
+  ~MidiDeviceAndroid();
+
+  std::string GetManufacturer();
+  std::string GetProductName();
+  std::string GetDeviceVersion();
+
+  const ScopedVector<MidiInputPortAndroid>& input_ports() const {
+    return input_ports_;
+  }
+  const ScopedVector<MidiOutputPortAndroid>& output_ports() const {
+    return output_ports_;
+  }
+  bool HasRawDevice(JNIEnv* env, jobject raw_device) const {
+    return env->IsSameObject(raw_device_.obj(), raw_device);
+  }
+
+  static bool Register(JNIEnv* env);
+
+ private:
+  base::android::ScopedJavaGlobalRef<jobject> raw_device_;
+  ScopedVector<MidiInputPortAndroid> input_ports_;
+  ScopedVector<MidiOutputPortAndroid> output_ports_;
+};
+
+}  // namespace midi
+}  // namespace media
+
+#endif  // MEDIA_MIDI_MIDI_DEVICE_ANDROID_H_