[tracing] Fix resident size of malloc dump provider when tcmalloc is used

base/allocator/allocator_extension_thunks.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_extension_thunks.h"
 
 #include <cstddef> // for NULL
 
 namespace base {
 namespace allocator {
 namespace thunks {
 
 // This slightly odd translation unit exists because of the peculularity of how
 // allocator_unittests work on windows.  That target has to perform
 // tcmalloc-specific initialization on windows, but it cannot depend on base
 // otherwise. This target sits in the middle - base and allocator_unittests
 // can depend on it. This file can't depend on anything else in base, including
 // logging.
 
 static GetAllocatorWasteSizeFunction g_get_allocator_waste_size_function = NULL;
 static GetStatsFunction g_get_stats_function = NULL;
 static ReleaseFreeMemoryFunction g_release_free_memory_function = NULL;
+static GetNumericPropertyFunction g_get_numeric_property_function = NULL;
 
 void SetGetAllocatorWasteSizeFunction(
     GetAllocatorWasteSizeFunction get_allocator_waste_size_function) {
   g_get_allocator_waste_size_function = get_allocator_waste_size_function;
 }
 
 GetAllocatorWasteSizeFunction GetGetAllocatorWasteSizeFunction() {
   return g_get_allocator_waste_size_function;
 }
 
 void SetGetStatsFunction(GetStatsFunction get_stats_function) {
   g_get_stats_function = get_stats_function;
 }
 
 GetStatsFunction GetGetStatsFunction() {
   return g_get_stats_function;
 }
 
 void SetReleaseFreeMemoryFunction(
     ReleaseFreeMemoryFunction release_free_memory_function) {
   g_release_free_memory_function = release_free_memory_function;
 }
 
 ReleaseFreeMemoryFunction GetReleaseFreeMemoryFunction() {
   return g_release_free_memory_function;
 }
 
+void SetGetNumericPropertyFunction(
+    GetNumericPropertyFunction get_numeric_property_function) {
+  g_get_numeric_property_function = get_numeric_property_function;
+}
+
+GetNumericPropertyFunction GetGetNumericPropertyFunction() {
+  return g_get_numeric_property_function;
+}
+
 }  // namespace thunks
 }  // namespace allocator
 }  // namespace base