[Web MIDI] Use Android MIDI API.

media/midi/midi_output_port_android.cc

Index: media/midi/midi_output_port_android.cc
diff --git a/media/midi/midi_output_port_android.cc b/media/midi/midi_output_port_android.cc
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index 0000000000000000000000000000000000000000..f82ad51d63bdc140f9c29744e55037d3315872c3
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+++ b/media/midi/midi_output_port_android.cc
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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.
+
+#include "media/midi/midi_output_port_android.h"
+
+#include "base/android/jni_array.h"
+#include "jni/MidiOutputPortAndroid_jni.h"
+
+namespace media {
+namespace midi {
+
+MidiOutputPortAndroid::MidiOutputPortAndroid(JNIEnv* env, jobject raw)
+    : raw_port_(env, raw) {}
+MidiOutputPortAndroid::~MidiOutputPortAndroid() {
+  Close();
+}
+
+bool MidiOutputPortAndroid::Open() {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  return Java_MidiOutputPortAndroid_open(env, raw_port_.obj());
+}
+
+void MidiOutputPortAndroid::Close() {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_MidiOutputPortAndroid_close(env, raw_port_.obj());
+}
+
+void MidiOutputPortAndroid::Send(const std::vector<uint8>& data) {
+  if (data.size() == 0) {
+    return;
+  }
+
+  JNIEnv* env = base::android::AttachCurrentThread();
+  ScopedJavaLocalRef<jbyteArray> data_to_pass =
+      base::android::ToJavaByteArray(env, &data[0], data.size());
+
+  Java_MidiOutputPortAndroid_send(env, raw_port_.obj(), data_to_pass.obj());
+}
+
+bool MidiOutputPortAndroid::Register(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace midi
+}  // namespace media