mojo: java bindings rename Message subclasses.

mojo/android/javatests/src/org/chromium/mojo/bindings/BindingsTestUtils.java

 // 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.TestUtils;
 import org.chromium.mojo.system.Handle;
 import org.chromium.mojo.system.MojoException;
 import org.chromium.mojo.system.Pair;
@@ skipping 64 matching lines @@
          */
         public MojoException getLastMojoException() {
             return mLastMojoException;
         }
 
     }
 
     /**
      * Creates a new valid {@link Message}. The message will have a valid header.
      */
-    public static Message newRandomMessageWithHeader(int size) {
+    public static Message newRandomMessage(int size) {
         assert size > 16;
         ByteBuffer message = TestUtils.newRandomBuffer(size);
         int[] headerAsInts = { 16, 2, 0, 0 };
         for (int i = 0; i < 4; ++i) {
             message.putInt(4 * i, headerAsInts[i]);
         }
         message.position(0);
-        return new SimpleMessage(message, new ArrayList<Handle>());
+        return new Message(message, new ArrayList<Handle>());
     }
 }