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

mojo/public/java/bindings/src/org/chromium/mojo/bindings/Struct.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.system.Core;
-
-/**
- * Base class for all mojo structs.
- */
-public abstract class Struct {
-    /**
-     * The base size of the encoded struct.
-     */
-    private final int mEncodedBaseSize;
-
-    /**
-     * The version of the struct.
-     */
-    private final int mVersion;
-
-    /**
-     * Constructor.
-     */
-    protected Struct(int encodedBaseSize, int version) {
-        mEncodedBaseSize = encodedBaseSize;
-        mVersion = version;
-    }
-
-    /**
-     * Returns the version of the struct. It is the max version of the struct in the mojom if it has
-     * been created locally, and the version of the received struct if it has been deserialized.
-     */
-    public int getVersion() {
-        return mVersion;
-    }
-
-    /**
-     * Returns the serialization of the struct. 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, mEncodedBaseSize);
-        encode(encoder);
-        return encoder.getMessage();
-    }
-
-    /**
-     * Returns the serialization of the struct prepended with the given header.
-     *
-     * @param header the header to prepend to the returned message.
-     * @param core the |Core| implementation used to generate handles. Only used if the |Struct|
-     *            being encoded contains interfaces, can be |null| otherwise.
-     */
-    public ServiceMessage serializeWithHeader(Core core, MessageHeader header) {
-        Encoder encoder = new Encoder(core, mEncodedBaseSize + header.getSize());
-        header.encode(encoder);
-        encode(encoder);
-        return new ServiceMessage(encoder.getMessage(), header);
-    }
-
-    /**
-     * Use the given encoder to serialize this data structure.
-     */
-    protected abstract void encode(Encoder encoder);
-}