Enable warning 4389 as an error on windows builds. This will make...

base/iat_patch.cc

Index: base/iat_patch.cc
===================================================================
--- base/iat_patch.cc	(revision 48060)
+++ base/iat_patch.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
@@ -178,7 +178,7 @@
 IATPatchFunction::~IATPatchFunction() {
   if (NULL != intercept_function_) {
     DWORD error = Unpatch();
-    DCHECK_EQ(NO_ERROR, error);
+    DCHECK(error == NO_ERROR);
   }
 }