Hook up allocator shim on mac.

base/allocator/allocator_shim_default_dispatch_to_tcmalloc.cc

 // Copyright 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.
 
 #include "base/allocator/allocator_shim.h"
 #include "base/allocator/allocator_shim_internals.h"
 #include "third_party/tcmalloc/chromium/src/config.h"
 #include "third_party/tcmalloc/chromium/src/gperftools/tcmalloc.h"
 
 namespace {
@@ skipping 26 matching lines @@
 
 }  // namespace
 
 const AllocatorDispatch AllocatorDispatch::default_dispatch = {
     &TCMalloc,          /* alloc_function */
     &TCCalloc,          /* alloc_zero_initialized_function */
     &TCMemalign,        /* alloc_aligned_function */
     &TCRealloc,         /* realloc_function */
     &TCFree,            /* free_function */
     &TCGetSizeEstimate, /* get_size_estimate_function */
+    nullptr,            /* batch_malloc_function */
+    nullptr,            /* batch_free_function */
+    nullptr,            /* free_definite_size_function */
     nullptr,            /* next */
 };
 
 // In the case of tcmalloc we have also to route the diagnostic symbols,
 // which are not part of the unified shim layer, to tcmalloc for consistency.
 
 extern "C" {
 
 SHIM_ALWAYS_EXPORT void malloc_stats(void) __THROW {
   return tc_malloc_stats();
@@ skipping 15 matching lines @@
 
 #if defined(__ANDROID__)
 SHIM_ALWAYS_EXPORT size_t malloc_usable_size(const void* address) __THROW {
 #else
 SHIM_ALWAYS_EXPORT size_t malloc_usable_size(void* address) __THROW {
 #endif
   return tc_malloc_size(address);
 }
 
 }  // extern "C"