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

mojo/public/cpp/bindings/lib/message_builder.h

-// Copyright 2013 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.
-
-// These are helper classes for allocating, aligning, and framing a
-// |mojo::Message|. They are mainly used from within the generated C++ bindings.
-
-#ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_MESSAGE_BUILDER_H_
-#define MOJO_PUBLIC_CPP_BINDINGS_LIB_MESSAGE_BUILDER_H_
-
-#include <stdint.h>
-
-#include "mojo/public/cpp/bindings/lib/fixed_buffer.h"
-#include "mojo/public/cpp/bindings/lib/message_internal.h"
-#include "mojo/public/cpp/bindings/message.h"
-
-namespace mojo {
-
-class Message;
-
-// MessageBuilder helps initialize and frame a |mojo::Message| that does not
-// expect a response message, and therefore does not tag the message with a
-// request id (which may save some bytes).
-//
-// The underlying |Message| is owned by MessageBuilder, but can be permanently
-// moved by accessing |message()| and calling its |MoveTo()|.
-class MessageBuilder {
- public:
-  // This frames and configures a |mojo::Message| with the given message name.
-  MessageBuilder(uint32_t name, size_t payload_size);
-  ~MessageBuilder();
-
-  Message* message() { return &message_; }
-
-  // TODO(vardhan): |buffer()| is internal and only consumed by internal classes
-  // and unittests.  Consider making it private + friend class its consumers?
-  internal::Buffer* buffer() { return &buf_; }
-
- protected:
-  MessageBuilder();
-  void Initialize(size_t size);
-
-  Message message_;
-  internal::FixedBuffer buf_;
-
-  MOJO_DISALLOW_COPY_AND_ASSIGN(MessageBuilder);
-};
-
-namespace internal {
-
-class MessageWithRequestIDBuilder : public MessageBuilder {
- public:
-  MessageWithRequestIDBuilder(uint32_t name,
-                              size_t payload_size,
-                              uint32_t flags,
-                              uint64_t request_id);
-};
-
-}  // namespace internal
-
-// Builds a |mojo::Message| that is a "request" message that expects a response
-// message. You can give it a unique |request_id| (with which you can construct
-// a response message) by calling |message()->set_request_id()|.
-//
-// Has the same interface as |mojo::MessageBuilder|.
-class RequestMessageBuilder : public internal::MessageWithRequestIDBuilder {
- public:
-  RequestMessageBuilder(uint32_t name, size_t payload_size)
-      : MessageWithRequestIDBuilder(name,
-                                    payload_size,
-                                    internal::kMessageExpectsResponse,
-                                    0) {}
-};
-
-// Builds a |mojo::Message| that is a "response" message which pertains to a
-// |request_id|.
-//
-// Has the same interface as |mojo::MessageBuilder|.
-class ResponseMessageBuilder : public internal::MessageWithRequestIDBuilder {
- public:
-  ResponseMessageBuilder(uint32_t name,
-                         size_t payload_size,
-                         uint64_t request_id)
-      : MessageWithRequestIDBuilder(name,
-                                    payload_size,
-                                    internal::kMessageIsResponse,
-                                    request_id) {}
-};
-
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_MESSAGE_BUILDER_H_