[Web MIDI] Use Android MIDI API.

media/midi/java/src/org/chromium/media/midi/MidiOutputPortAndroid.java

Index: media/midi/java/src/org/chromium/media/midi/MidiOutputPortAndroid.java
diff --git a/media/midi/java/src/org/chromium/media/midi/MidiOutputPortAndroid.java b/media/midi/java/src/org/chromium/media/midi/MidiOutputPortAndroid.java
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+++ b/media/midi/java/src/org/chromium/media/midi/MidiOutputPortAndroid.java
@@ -0,0 +1,56 @@
+// 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.
+
+package org.chromium.media.midi;
+
+import android.media.midi.MidiInputPort;
+
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.base.annotations.JNINamespace;
+
+import java.io.IOException;
+
+/**
+ * A class implementing media::midi::MidiOutputPortAndroid functionality.
+ */
+// Note "OutputPort" is named in the WebMIDI manner. It corresponds to MidiInputPort class in the
+// Android API.
+@JNINamespace("media::midi")
+class MidiOutputPortAndroid {
+    /**
+     * The underlying port.
+     */
+    private MidiInputPort mPort;
+
+    /**
+     * constructor
+     * @port port
+     */
+    MidiOutputPortAndroid(MidiInputPort port) {
+        mPort = port;
+    }
+
+    /**
+     * Sends the data to the underlying output port.
+     */
+    @CalledByNative
+    void send(byte[] bs) {
+        try {
+            mPort.send(bs, 0, bs.length);
+        } catch (IOException e) {
+            // We can do nothing here. Just ignore the error.
+        }
+    }
+
+    /**
+     * Closes the port.
+     */
+    void close() {
+        try {
+            mPort.close();
+        } catch (IOException e) {
+            // We can do nothing here. Just ignore the error.
+        }
+    }
+}