Move oom.h into partition_allocator.

base/allocator/oom.h

-// Copyright (c) 2016 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_ALLOCATOR_OOM_H
-#define BASE_ALLOCATOR_OOM_H
-
-#include "base/logging.h"
-
-#if defined(OS_WIN)
-#include <windows.h>
-#endif
-
-// Do not want trivial entry points just calling OOM_CRASH() to be
-// commoned up by linker icf/comdat folding.
-#define OOM_CRASH_PREVENT_ICF()                  \
-  volatile int oom_crash_inhibit_icf = __LINE__; \
-  ALLOW_UNUSED_LOCAL(oom_crash_inhibit_icf)
-
-// OOM_CRASH() - Specialization of IMMEDIATE_CRASH which will raise a custom
-// exception on Windows to signal this is OOM and not a normal assert.
-#if defined(OS_WIN)
-#define OOM_CRASH()                                                     \
-  do {                                                                  \
-    OOM_CRASH_PREVENT_ICF();                                            \
-    ::RaiseException(0xE0000008, EXCEPTION_NONCONTINUABLE, 0, nullptr); \
-    IMMEDIATE_CRASH();                                                  \
-  } while (0)
-#else
-#define OOM_CRASH()          \
-  do {                       \
-    OOM_CRASH_PREVENT_ICF(); \
-    IMMEDIATE_CRASH();       \
-  } while (0)
-#endif
-
-#endif  // BASE_ALLOCATOR_OOM_H