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-rw-r--r--security/sandbox/chromium/base/template_util.h122
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diff --git a/security/sandbox/chromium/base/template_util.h b/security/sandbox/chromium/base/template_util.h
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--- a/security/sandbox/chromium/base/template_util.h
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-// Copyright (c) 2011 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 BASE_TEMPLATE_UTIL_H_
-#define BASE_TEMPLATE_UTIL_H_
-
-#include <stddef.h>
-
-#include "build/build_config.h"
-
-namespace base {
-
-// template definitions from tr1
-
-template<class T, T v>
-struct integral_constant {
- static const T value = v;
- typedef T value_type;
- typedef integral_constant<T, v> type;
-};
-
-template <class T, T v> const T integral_constant<T, v>::value;
-
-typedef integral_constant<bool, true> true_type;
-typedef integral_constant<bool, false> false_type;
-
-template <class T> struct is_pointer : false_type {};
-template <class T> struct is_pointer<T*> : true_type {};
-
-// Member function pointer detection. This is built-in to C++ 11's stdlib, and
-// we can remove this when we switch to it.
-template<typename T>
-struct is_member_function_pointer : false_type {};
-
-template <typename R, typename Z, typename... A>
-struct is_member_function_pointer<R(Z::*)(A...)> : true_type {};
-template <typename R, typename Z, typename... A>
-struct is_member_function_pointer<R(Z::*)(A...) const> : true_type {};
-
-
-template <class T, class U> struct is_same : public false_type {};
-template <class T> struct is_same<T,T> : true_type {};
-
-template<class> struct is_array : public false_type {};
-template<class T, size_t n> struct is_array<T[n]> : public true_type {};
-template<class T> struct is_array<T[]> : public true_type {};
-
-template <class T> struct is_non_const_reference : false_type {};
-template <class T> struct is_non_const_reference<T&> : true_type {};
-template <class T> struct is_non_const_reference<const T&> : false_type {};
-
-template <class T> struct is_const : false_type {};
-template <class T> struct is_const<const T> : true_type {};
-
-template <class T> struct is_void : false_type {};
-template <> struct is_void<void> : true_type {};
-
-namespace internal {
-
-// Types YesType and NoType are guaranteed such that sizeof(YesType) <
-// sizeof(NoType).
-typedef char YesType;
-
-struct NoType {
- YesType dummy[2];
-};
-
-// This class is an implementation detail for is_convertible, and you
-// don't need to know how it works to use is_convertible. For those
-// who care: we declare two different functions, one whose argument is
-// of type To and one with a variadic argument list. We give them
-// return types of different size, so we can use sizeof to trick the
-// compiler into telling us which function it would have chosen if we
-// had called it with an argument of type From. See Alexandrescu's
-// _Modern C++ Design_ for more details on this sort of trick.
-
-struct ConvertHelper {
- template <typename To>
- static YesType Test(To);
-
- template <typename To>
- static NoType Test(...);
-
- template <typename From>
- static From& Create();
-};
-
-// Used to determine if a type is a struct/union/class. Inspired by Boost's
-// is_class type_trait implementation.
-struct IsClassHelper {
- template <typename C>
- static YesType Test(void(C::*)(void));
-
- template <typename C>
- static NoType Test(...);
-};
-
-} // namespace internal
-
-// Inherits from true_type if From is convertible to To, false_type otherwise.
-//
-// Note that if the type is convertible, this will be a true_type REGARDLESS
-// of whether or not the conversion would emit a warning.
-template <typename From, typename To>
-struct is_convertible
- : integral_constant<bool,
- sizeof(internal::ConvertHelper::Test<To>(
- internal::ConvertHelper::Create<From>())) ==
- sizeof(internal::YesType)> {
-};
-
-template <typename T>
-struct is_class
- : integral_constant<bool,
- sizeof(internal::IsClassHelper::Test<T>(0)) ==
- sizeof(internal::YesType)> {
-};
-
-} // namespace base
-
-#endif // BASE_TEMPLATE_UTIL_H_