Move Partition Allocator into Chromium base.

base/allocator/oom.h

Index: base/allocator/oom.h
diff --git a/base/allocator/oom.h b/base/allocator/oom.h
new file mode 100644
index 0000000000000000000000000000000000000000..68dfae76b881cfba5164d1de5d2fd5257ab28f1f
--- /dev/null
+++ b/base/allocator/oom.h
@@ -0,0 +1,26 @@
+// 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
+
+// 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 {                                                                  \
+    ::RaiseException(0xE0000008, EXCEPTION_NONCONTINUABLE, 0, nullptr); \

[danakj, 2016/12/13 23:56:13]

This is in base already.
https://cs.chromium.org/chromium/src/base/logging.h?rcl=0&l=472

+    IMMEDIATE_CRASH();                                                  \
+  } while (0)
+#else
+#define OOM_CRASH() IMMEDIATE_CRASH()
+#endif
+
+#endif  // BASE_ALLOCATOR_OOM_H