Hookup the generic heap intercept for Windows.

base/allocator/allocator_impl_win.h

Index: base/allocator/allocator_impl_win.h
diff --git a/base/allocator/allocator_impl_win.h b/base/allocator/allocator_impl_win.h
new file mode 100644
index 0000000000000000000000000000000000000000..1f7167b8e0ca84a016cdef6d1019ec79ee503ab5
--- /dev/null
+++ b/base/allocator/allocator_impl_win.h
@@ -0,0 +1,27 @@
+// 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 <limits.h>
+#include <malloc.h>
+#include <new.h>
+#include <windows.h>
+#include <stddef.h>
+
+
+namespace base {

[Primiano Tucci (use gerrit), 2016/07/12 14:51:05]

I'd add a TODO to this file saying that once the unified allocator shim sticks
this should be deleted (together with win_allocator_shim.cc) and just merged in
default_dispatch_to_winheap, so we have less layers to bounce when reading the
code.

[Sigurður Ásgeirsson, 2016/07/14 19:04:27]

Done.

+namespace allocator {
+
+extern bool g_is_win_shim_layer_initialized;
+
+void* WinHeapMalloc(size_t size);
+void WinHeapFree(void* size);
+void* WinHeapRealloc(void* ptr, size_t size);
+void* WinHeapCalloc(size_t n, size_t elem_size);
+
+// Call the new handler, if one has been set.
+// Returns true on successfully calling the handler, false otherwise.
+bool WinCallNewHandler(size_t size);
+
+}  // namespace allocator
+}  // namespace base