Implement a ScopedThreadHeapUsage class to allow profiling per-thread heap usage.

base/allocator/allocator_shim_default_dispatch_to_winheap.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/winheap_stubs_win.h"
 #include "base/logging.h"
 
 namespace {
@@ skipping 29 matching lines @@
 void* DefaultWinHeapReallocImpl(const AllocatorDispatch* self,
                                 void* address,
                                 size_t size) {
   return base::allocator::WinHeapRealloc(address, size);
 }
 
 void DefaultWinHeapFreeImpl(const AllocatorDispatch*, void* address) {
   base::allocator::WinHeapFree(address);
 }
 
+size_t DefaultWinHeapGetSizeEstimateImpl(const AllocatorDispatch*,
+                                         void* address) {
+  return base::allocator::WinHeapGetSizeEstimate(address);
+}
+
 }  // namespace
 
 const AllocatorDispatch AllocatorDispatch::default_dispatch = {
-    &DefaultWinHeapMallocImpl,   &DefaultWinHeapCallocImpl,
-    &DefaultWinHeapMemalignImpl, &DefaultWinHeapReallocImpl,
-    &DefaultWinHeapFreeImpl,     nullptr, /* next */
+    &DefaultWinHeapMallocImpl,
+    &DefaultWinHeapCallocImpl,
+    &DefaultWinHeapMemalignImpl,
+    &DefaultWinHeapReallocImpl,
+    &DefaultWinHeapFreeImpl,
+    &DefaultWinHeapGetSizeEstimateImpl,
+    nullptr, /* next */
 };