Revert of Move logic from memory_mac to allocator_interception_mac.

base/allocator/allocator_interception_mac.h

-// Copyright 2017 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_ALLOCATOR_INTERCEPTION_MAC_H_
-#define BASE_ALLOCATOR_ALLOCATOR_INTERCEPTION_MAC_H_
-
-#include <stddef.h>
-
-namespace base {
-namespace allocator {
-
-// Calls the original implementation of malloc/calloc prior to interception.
-bool UncheckedMallocMac(size_t size, void** result);
-bool UncheckedCallocMac(size_t num_items, size_t size, void** result);
-
-// Intercepts calls to default and purgeable malloc zones. Intercepts Core
-// Foundation and Objective-C allocations.
-void InterceptAllocationsMac();
-}  // namespace allocator
-}  // namespace base
-
-#endif  // BASE_ALLOCATOR_ALLOCATOR_INTERCEPTION_MAC_H_