Adding a router class to handle messages that expect responses.

mojo/android/javatests/src/org/chromium/mojo/TestUtils.java

Index: mojo/android/javatests/src/org/chromium/mojo/TestUtils.java
diff --git a/mojo/android/javatests/src/org/chromium/mojo/TestUtils.java b/mojo/android/javatests/src/org/chromium/mojo/TestUtils.java
index ad13ca9d3ea81dbbbf0ea2c7ec02bca51f70f2f3..2134a9f170b1d15f71eafc79db0d64600cc4f2aa 100644
--- a/mojo/android/javatests/src/org/chromium/mojo/TestUtils.java
+++ b/mojo/android/javatests/src/org/chromium/mojo/TestUtils.java
@@ -5,6 +5,7 @@
 package org.chromium.mojo;
 
 import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
 import java.util.Random;
 
 /**
@@ -22,6 +23,7 @@ public final class TestUtils {
         RANDOM.setSeed(size);
         RANDOM.nextBytes(bytes);
         ByteBuffer data = ByteBuffer.allocateDirect(size);
+        data.order(ByteOrder.nativeOrder());
         data.put(bytes);
         data.flip();
         return data;