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

mojo/public/cpp/system/macros.h

-// 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.
-
-// Define a set of C++ specific macros.
-// Mojo C++ API users can assume that mojo/public/cpp/system/macros.h
-// includes mojo/public/c/include/mojo/macros.h.
-
-#ifndef MOJO_PUBLIC_CPP_SYSTEM_MACROS_H_
-#define MOJO_PUBLIC_CPP_SYSTEM_MACROS_H_
-
-#include <mojo/macros.h>
-
-#include <utility>
-
-// A macro to disallow the copy constructor and operator= functions. This is
-// typically used like:
-//
-//   class MyUncopyableClass {
-//    public:
-//     ...
-//    private:
-//     ...
-//     MOJO_DISALLOW_COPY_AND_ASSIGN(MyUncopyableClass);
-//   };
-#define MOJO_DISALLOW_COPY_AND_ASSIGN(TypeName) \
-  TypeName(const TypeName&) = delete;           \
-  void operator=(const TypeName&) = delete
-
-// Used to calculate the number of elements in an array.
-// (See |arraysize()| in Chromium's base/macros.h for more details.)
-namespace mojo {
-namespace internal {
-template <typename T, size_t N>
-char(&ArraySizeHelper(T(&array)[N]))[N];
-#if !defined(_MSC_VER)
-template <typename T, size_t N>
-char(&ArraySizeHelper(const T(&array)[N]))[N];
-#endif
-}  // namespace internal
-}  // namespace mojo
-#define MOJO_ARRAYSIZE(array) (sizeof(::mojo::internal::ArraySizeHelper(array)))
-
-// Used to make a type move-only. (The MoveOnlyTypeForCPP03 typedef is for
-// Chromium's base/callback.h to tell that this type is move-only.) This is
-// typically used like:
-//
-//   class MyMoveOnlyClass {
-//    public:
-//     ...
-//    private:
-//     ...
-//     MOJO_MOVE_ONLY_TYPE(MyMoveOnlyClass);
-//   };
-//
-// (Note: Class members following the use of this macro will have private access
-// by default.)
-#define MOJO_MOVE_ONLY_TYPE(type)                                    \
- public:                                                             \
-  type&& Pass() MOJO_WARN_UNUSED_RESULT { return std::move(*this); } \
-  typedef void MoveOnlyTypeForCPP03;                                 \
-                                                                     \
- private:                                                            \
-  type(const type&) = delete;                                        \
-  void operator=(const type&) = delete
-
-namespace mojo {
-
-// Used to explicitly mark the return value of a function as unused. (Use this
-// if you are really sure you don't want to do anything with the return value of
-// a function marked with |MOJO_WARN_UNUSED_RESULT|.
-template <typename T>
-inline void ignore_result(const T&) {
-}
-
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_SYSTEM_MACROS_H_