Update mojo sdk to rev 1dc8a9a5db73d3718d99917fadf31f5fb2ebad4f

third_party/mojo/src/mojo/public/java/bindings/src/org/chromium/mojo/bindings/Union.java

Index: third_party/mojo/src/mojo/public/java/bindings/src/org/chromium/mojo/bindings/Union.java
diff --git a/third_party/mojo/src/mojo/public/java/bindings/src/org/chromium/mojo/bindings/Union.java b/third_party/mojo/src/mojo/public/java/bindings/src/org/chromium/mojo/bindings/Union.java
new file mode 100644
index 0000000000000000000000000000000000000000..90b40ea57b03a599ba5b2bd38ebc56afca60c592
--- /dev/null
+++ b/third_party/mojo/src/mojo/public/java/bindings/src/org/chromium/mojo/bindings/Union.java
@@ -0,0 +1,30 @@
+// Copyright 2014 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.bindings;
+
+import org.chromium.mojo.system.Core;
+
+/**
+ * Base class for all mojo unions.
+ */
+public abstract class Union {
+    /**
+     * Returns the serialization of the union. This method can close Handles.
+     *
+     * @param core the |Core| implementation used to generate handles. Only used if the data
+     *            structure being encoded contains interfaces, can be |null| otherwise.
+     */
+    public Message serialize(Core core) {
+        Encoder encoder = new Encoder(core, BindingsHelper.UNION_SIZE);
+        encoder.claimMemory(16);
+        encode(encoder, 0);
+        return encoder.getMessage();
+    }
+
+    /**
+     * Serializes this data structure using the given encoder.
+     */
+    protected abstract void encode(Encoder encoder, int offset);
+}