Implement SSL client authentication for Windows....

net/http/http_response_info.h

Index: net/http/http_response_info.h
===================================================================
--- net/http/http_response_info.h	(revision 18321)
+++ net/http/http_response_info.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2009 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.
 
@@ -13,6 +13,7 @@
 namespace net {
 
 class HttpResponseHeaders;
+class SSLCertRequestInfo;
 
 class HttpResponseInfo {
  public:
@@ -41,6 +42,12 @@
   // will contain additional information about the authentication challenge.
   scoped_refptr<AuthChallengeInfo> auth_challenge;
 
+  // The SSL client certificate request info.
+  // TODO(wtc): does this really belong in HttpResponseInfo?  I put it here
+  // because it is similar to |auth_challenge|, but unlike HTTP authentication
+  // challenge, client certificate request is not part of an HTTP response.
+  scoped_refptr<SSLCertRequestInfo> cert_request_info;
+
   // The SSL connection info (if HTTPS).
   SSLInfo ssl_info;