Hookup the generic heap intercept for Windows.

base/allocator/allocator_shim_default_dispatch_to_winheap.cc

Index: base/allocator/allocator_shim_default_dispatch_to_winheap.cc
diff --git a/base/allocator/allocator_shim_default_dispatch_to_winheap.cc b/base/allocator/allocator_shim_default_dispatch_to_winheap.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4d5a27429a33e16bf18eabc2a432fb2c0882f0eb
--- /dev/null
+++ b/base/allocator/allocator_shim_default_dispatch_to_winheap.cc
@@ -0,0 +1,56 @@
+// 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 {
+
+using base::allocator::AllocatorDispatch;
+
+void* DefaultWinHeapMallocImpl(const AllocatorDispatch*, size_t size) {
+  return base::allocator::WinHeapMalloc(size);
+}
+
+void* DefaultWinHeapCallocImpl(const AllocatorDispatch* self,
+                               size_t n,
+                               size_t elem_size) {
+  // Overflow check.
+  const size_t size = n * elem_size;
+  if (elem_size != 0 && size / elem_size != n)
+    return nullptr;
+
+  void* result = DefaultWinHeapMallocImpl(self, size);
+  if (result) {
+    memset(result, 0, size);
+  }
+  return result;
+}
+
+void* DefaultWinHeapMemalignImpl(const AllocatorDispatch* self,
+                                 size_t alignment,
+                                 size_t size) {
+  CHECK(false) << "The windows heap does not support memalign.";
+  return nullptr;
+}
+
+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);
+}
+
+}  // namespace
+
+const AllocatorDispatch AllocatorDispatch::default_dispatch = {
+    &DefaultWinHeapMallocImpl,   &DefaultWinHeapCallocImpl,
+    &DefaultWinHeapMemalignImpl, &DefaultWinHeapReallocImpl,
+    &DefaultWinHeapFreeImpl,     nullptr, /* next */
+};