Enable the handle verifier.

base/win/scoped_handle.h

 // 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.
 
 #ifndef BASE_WIN_SCOPED_HANDLE_H_
 #define BASE_WIN_SCOPED_HANDLE_H_
 #pragma once
 
 #include <windows.h>
 
@@ skipping 127 matching lines @@
  public:
   typedef HANDLE Handle;
 
   static void StartTracking(HANDLE handle, const void* owner, const void* pc);
   static void StopTracking(HANDLE handle, const void* owner, const void* pc);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(VerifierTraits);
 };
 
-typedef GenericScopedHandle<HandleTraits, DummyVerifierTraits> ScopedHandle;
+typedef GenericScopedHandle<HandleTraits, VerifierTraits> ScopedHandle;
 
 }  // namespace win
 }  // namespace base
 
 #endif  // BASE_SCOPED_HANDLE_WIN_H_