allocator: rename use_experimental_allocator_shim to use_allocator_shim

base/process/memory_mac.mm

 // Copyright (c) 2013 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.
 
 #include "base/process/memory.h"
 
 #include "base/allocator/allocator_interception_mac.h"
 #include "base/allocator/allocator_shim.h"
 #include "base/allocator/features.h"
 #include "build/build_config.h"
@@ skipping 19 matching lines @@
 bool UncheckedCalloc(size_t num_items, size_t size, void** result) {
   return allocator::UncheckedCallocMac(num_items, size, result);
 }
 
 void EnableTerminationOnOutOfMemory() {
   // Step 1: Enable OOM killer on C++ failures.
   std::set_new_handler(oom_killer_new);
 
 // Step 2: Enable OOM killer on C-malloc failures for the default zone (if we
 // have a shim).
-#if BUILDFLAG(USE_EXPERIMENTAL_ALLOCATOR_SHIM)
+#if BUILDFLAG(USE_ALLOCATOR_SHIM)
   allocator::SetCallNewHandlerOnMallocFailure(true);
 #endif
 
   // Step 3: Enable OOM killer on all other malloc zones (or just "all" without
   // "other" if shim is disabled).
   allocator::InterceptAllocationsMac();
 }
 
 }  // namespace base