Add VR desktop activity structure

remoting/android/java/src/org/chromium/chromoting/CardboardDesktopActivity.java

+// 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.chromoting;
+
+import android.os.Bundle;
+
+import com.google.vrtoolkit.cardboard.CardboardActivity;
+import com.google.vrtoolkit.cardboard.CardboardView;
+
+/**
+ * Virtual desktop activity for Cardboard.
+ */
+public class CardboardDesktopActivity extends CardboardActivity {
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.cardboard_desktop);
+
+        CardboardView cardboardView = (CardboardView) findViewById(R.id.cardboard_view);
+
+        // Associate a CardboardView.StereoRenderer with cardboardView.
+        cardboardView.setRenderer(new CardboardDesktopRenderer(this));
+
+        // Associate the cardboardView with this activity.
+        setCardboardView(cardboardView);
+    }
+}