Pull seccomp-sandbox in via DEPS rather than using an in-tree copy...

sandbox/linux/seccomp/allocator.h

-// Copyright (c) 2010 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.
-
-// Implement a very basic memory allocator that make direct system calls
-// instead of relying on libc.
-// This allocator is not thread-safe.
-
-#ifndef ALLOCATOR_H__
-#define ALLOCATOR_H__
-
-#include <cstddef>
-
-namespace playground {
-
-class SystemAllocatorHelper {
- protected:
-  static void *sys_allocate(size_t size);
-  static void sys_deallocate(void* p, size_t size);
-};
-
-template <class T>
-class SystemAllocator : SystemAllocatorHelper {
- public:
-  typedef T         value_type;
-  typedef T*        pointer;
-  typedef const T*  const_pointer;
-  typedef T&        reference;
-  typedef const T&  const_reference;
-  typedef size_t    size_type;
-  typedef std::ptrdiff_t difference_type;
-
-  template <class U>
-  struct rebind {
-    typedef SystemAllocator<U> other;
-  };
-
-  pointer address(reference value) const {
-    return &value;
-  }
-
-  const_pointer address(const_reference value) const {
-    return &value;
-  }
-
-  SystemAllocator() throw() { }
-  SystemAllocator(const SystemAllocator& src) throw() { }
-  template <class U> SystemAllocator(const SystemAllocator<U>& src) throw() { }
-  ~SystemAllocator() throw() { }
-
-  size_type max_size() const throw() {
-    return (1 << 30) / sizeof(T);
-  }
-
-  pointer allocate(size_type num, const void* = 0) {
-    if (num > max_size()) {
-      return NULL;
-    }
-    return (pointer)sys_allocate(num * sizeof(T));
-  }
-
-  void construct(pointer p, const T& value) {
-    new(reinterpret_cast<void *>(p))T(value);
-  }
-
-  void destroy(pointer p) {
-    p->~T();
-  }
-
-  void deallocate(pointer p, size_type num) {
-    sys_deallocate(p, num * sizeof(T));
-  }
-};
-
-template <class T1, class T2>
-bool operator== (const SystemAllocator<T1>&, const SystemAllocator<T2>&)
-    throw() {
-  return true;
-}
-template <class T1, class T2>
-bool operator!= (const SystemAllocator<T1>&, const SystemAllocator<T2>&)
-    throw() {
-  return false;
-}
-
-}  // namespace
-
-#endif  // ALLOCATOR_H__