Add android.mojo application.

shell/android/apk/src/org/chromium/mojo/shell/AndroidFactory.java

Index: shell/android/apk/src/org/chromium/mojo/shell/AndroidFactory.java
diff --git a/shell/android/apk/src/org/chromium/mojo/shell/AndroidFactory.java b/shell/android/apk/src/org/chromium/mojo/shell/AndroidFactory.java
new file mode 100644
index 0000000000000000000000000000000000000000..f3a34c0936b29a3d0b933dde4d233604123e04fe
--- /dev/null
+++ b/shell/android/apk/src/org/chromium/mojo/shell/AndroidFactory.java
@@ -0,0 +1,29 @@
+// 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.mojo.shell;
+
+import org.chromium.mojo.android.ActivityImpl;
+import org.chromium.mojo.application.ServiceFactoryBinder;
+import org.chromium.mojo.bindings.InterfaceRequest;
+import org.chromium.mojom.activity.Activity;
+
+/**
+ * A ServiceFactoryBinder for the android service.
+ */
+final class AndroidFactory implements ServiceFactoryBinder<Activity> {
+    @Override
+    public void bind(final InterfaceRequest<Activity> request) {
+        if (ViewportActivity.getCurrent() == null) {
+            request.close();
+            return;
+        }
+        Activity.MANAGER.bind(new ActivityImpl(ViewportActivity.getCurrent()), request);
+    }
+
+    @Override
+    public String getInterfaceName() {
+        return Activity.MANAGER.getName();
+    }
+}