1. Enable large object pointer offset check in release build.

base/allocator/allocator_shim.cc

 // Copyright (c) 2012 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/allocator/allocator_shim.h"
 
 #include <config.h>
 #include "base/allocator/allocator_extension_thunks.h"
 #include "base/profiler/alternate_timer.h"
 #include "base/sysinfo.h"
@@ skipping 310 matching lines @@
 
   if (secondary_length || !primary_length) {
     const char* secondary_value = secondary_length ? buffer : "TCMALLOC";
     // Force renderer (or other subprocesses) to use secondary_value.
     int ret_val = _putenv_s(primary_name, secondary_value);
     DCHECK_EQ(0, ret_val);
   }
 #endif  // ENABLE_DYNAMIC_ALLOCATOR_SWITCHING
 }
 
+void* TCMallocDoMallocForTest(size_t size) {
+  return do_malloc(size);
+}
+
+void TCMallocDoFreeForTest(void* ptr) {
+  do_free(ptr);
+}
+
+size_t ExcludeSpaceForMarkForTest(size_t size) {
+  return ExcludeSpaceForMark(size);
+}
+
 }  // namespace allocator.
 }  // namespace base.