Add a sky media service to make it possible to play a sound.

sky/services/media/src/org/domokit/media/MediaServiceImpl.java

Index: sky/services/media/src/org/domokit/media/MediaServiceImpl.java
diff --git a/sky/services/media/src/org/domokit/media/MediaServiceImpl.java b/sky/services/media/src/org/domokit/media/MediaServiceImpl.java
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+++ b/sky/services/media/src/org/domokit/media/MediaServiceImpl.java
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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.
+
+package org.domokit.media;
+
+import android.content.Context;
+
+import org.chromium.mojo.bindings.InterfaceRequest;
+import org.chromium.mojo.system.Core;
+import org.chromium.mojo.system.MojoException;
+import org.chromium.mojom.media.MediaPlayer;
+import org.chromium.mojom.media.MediaService;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+
+/**
+ * Android implementation of MediaService.
+ */
+public class MediaServiceImpl implements MediaService {
+    private static final String TAG = "MediaServiceImpl";
+    private final Core mCore;
+    private final Context mContext;
+    private static ExecutorService sThreadPool;
+
+    public MediaServiceImpl(Context context, Core core) {
+        assert context != null;
+        mContext = context;
+        assert core != null;
+        mCore = core;
+
+        if (sThreadPool == null) {
+            sThreadPool = Executors.newCachedThreadPool();
+        }
+    }
+
+    @Override
+    public void close() {}
+
+    @Override
+    public void onConnectionError(MojoException e) {}
+
+    @Override
+    public void createPlayer(InterfaceRequest<MediaPlayer> player) {
+        MediaPlayer.MANAGER.bind(new MediaPlayerImpl(mCore, mContext, sThreadPool), player);
+    }
+}