Make the fuchsia mojo/public repo the source of truth.

mojo/public/java/bindings/src/org/chromium/mojo/bindings/ServiceMessage.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 java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-
-/**
- * Represents a {@link Message} which contains a {@link MessageHeader}. Deals with parsing the
- * {@link MessageHeader} for a message.
- */
-public class ServiceMessage extends Message {
-
-    private final MessageHeader mHeader;
-    private Message mPayload;
-
-    /**
-     * Reinterpret the given |message| as a message with the given |header|. The |message| must
-     * contain the |header| as the start of its raw data.
-     */
-    public ServiceMessage(Message baseMessage, MessageHeader header) {
-        super(baseMessage.getData(), baseMessage.getHandles());
-        assert header.equals(new org.chromium.mojo.bindings.MessageHeader(baseMessage));
-        this.mHeader = header;
-    }
-
-    /**
-     * Reinterpret the given |message| as a message with a header. The |message| must contain a
-     * header as the start of it's raw data, which will be parsed by this constructor.
-     */
-    ServiceMessage(Message baseMessage) {
-        this(baseMessage, new org.chromium.mojo.bindings.MessageHeader(baseMessage));
-    }
-
-    /**
-     * @see Message#asServiceMessage()
-     */
-    @Override
-    public ServiceMessage asServiceMessage() {
-        return this;
-    }
-
-    /**
-     * Returns the header of the given message. This will throw a {@link DeserializationException}
-     * if the start of the message is not a valid header.
-     */
-    public MessageHeader getHeader() {
-        return mHeader;
-    }
-
-    /**
-     * Returns the payload of the message.
-     */
-    public Message getPayload() {
-        if (mPayload == null) {
-            ByteBuffer truncatedBuffer =
-                    ((ByteBuffer) getData().position(getHeader().getSize())).slice();
-            truncatedBuffer.order(ByteOrder.LITTLE_ENDIAN);
-            mPayload = new Message(truncatedBuffer, getHandles());
-        }
-        return mPayload;
-    }
-
-    /**
-     * Set the request identifier on the message.
-     */
-    void setRequestId(long requestId) {
-        mHeader.setRequestId(getData(), requestId);
-    }
-
-}