Remove now defunct MessageBuilder class.

mojo/public/libs/message/message.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.
-
-#ifndef MOJO_PUBLIC_LIBS_MESSAGE_MESSAGE_H_
-#define MOJO_PUBLIC_LIBS_MESSAGE_MESSAGE_H_
-
-#include <stdint.h>
-
-#include <vector>
-
-#include "mojo/public/system/core.h"
-
-namespace mojo {
-
-enum MessageFieldClass {
-  kMessageFieldClass_U32   = 0x1,
-  kMessageFieldClass_U64   = 0x2,
-  kMessageFieldClass_Array = 0x3,
-};
-
-enum MessageFieldType {
-  kMessageFieldType_Bool    = 0x1 << 2 | kMessageFieldClass_U32,
-  kMessageFieldType_Int8    = 0x2 << 2 | kMessageFieldClass_U32,
-  kMessageFieldType_Int16   = 0x3 << 2 | kMessageFieldClass_U32,
-  kMessageFieldType_Int32   = 0x4 << 2 | kMessageFieldClass_U32,
-  kMessageFieldType_Int64   = 0x5 << 2 | kMessageFieldClass_U64,
-  kMessageFieldType_Uint8   = 0x6 << 2 | kMessageFieldClass_U32,
-  kMessageFieldType_Uint16  = 0x7 << 2 | kMessageFieldClass_U32,
-  kMessageFieldType_Uint32  = 0x8 << 2 | kMessageFieldClass_U32,
-  kMessageFieldType_Uint64  = 0x9 << 2 | kMessageFieldClass_U64,
-  kMessageFieldType_Float   = 0xA << 2 | kMessageFieldClass_U32,
-  kMessageFieldType_Double  = 0xB << 2 | kMessageFieldClass_U64,
-  kMessageFieldType_String  = 0xC << 2 | kMessageFieldClass_Array,
-  kMessageFieldType_Bytes   = 0xD << 2 | kMessageFieldClass_Array,
-  kMessageFieldType_Handle  = 0xE << 2 | kMessageFieldClass_U32,
-  kMessageFieldType_Message = 0xF << 2 | kMessageFieldClass_Array,
-};
-
-class Message {
- public:
-  Message();
-  ~Message();
-
-  const std::vector<uint8_t>& data() const { return data_; }
-  const std::vector<Handle>& handles() const { return handles_; }
-
- private:
-  friend class MessageBuilder;
-
-  std::vector<uint8_t> data_;
-  std::vector<Handle> handles_;
-};
-
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_LIBS_MESSAGE_MESSAGE_H_