Hook up allocator shim on mac.

base/debug/thread_heap_usage_tracker_unittest.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/debug/thread_heap_usage_tracker.h"
 
 #include <map>
 
 #include "base/allocator/allocator_shim.h"
 #include "base/allocator/features.h"
@@ skipping 188 matching lines @@
     {
         &ThreadHeapUsageTrackerTest::OnAllocFn,  // alloc_function
         &ThreadHeapUsageTrackerTest::
             OnAllocZeroInitializedFn,  // alloc_zero_initialized_function
         &ThreadHeapUsageTrackerTest::
             OnAllocAlignedFn,                      // alloc_aligned_function
         &ThreadHeapUsageTrackerTest::OnReallocFn,  // realloc_function
         &ThreadHeapUsageTrackerTest::OnFreeFn,     // free_function
         &ThreadHeapUsageTrackerTest::
             OnGetSizeEstimateFn,  // get_size_estimate_function
+        nullptr,                  // batch_malloc
+        nullptr,                  // batch_free
         nullptr,                  // next
 };
 
 }  // namespace
 
 TEST_F(ThreadHeapUsageTrackerTest, SimpleUsageWithExactSizeFunction) {
   set_size_function_kind(EXACT_SIZE_FUNCTION);
 
   ThreadHeapUsageTracker usage_tracker;
   usage_tracker.Start();
@@ skipping 356 matching lines @@
   EXPECT_LE(u2.free_ops + 1, u3.free_ops);
 
   TestingThreadHeapUsageTracker::DisableHeapTrackingForTesting();
 
   ASSERT_FALSE(ThreadHeapUsageTracker::IsHeapTrackingEnabled());
 }
 #endif  // BUILDFLAG(USE_EXPERIMENTAL_ALLOCATOR_SHIM)
 
 }  // namespace debug
 }  // namespace base