Respect cookies set in a 401 responses when restarting the http transaction....

net/http/http_auth.h

 // Copyright (c) 2006-2008 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 NET_HTTP_HTTP_AUTH_H_
 #define NET_HTTP_HTTP_AUTH_H_
 
 #include "net/http/http_util.h"
 
 template <class T> class scoped_refptr;
 
 namespace net {
 
 class HttpAuthHandler;
 class HttpResponseHeaders;
 
 // Utility class for http authentication.
 class HttpAuth {
  public:
 
    // Http authentication can be done the the proxy server, origin server,
    // or both. This enum tracks who the target is.
    enum Target {
+     AUTH_NONE = -1,
+     // We depend on the valid targets (!= AUTH_NONE) being usable as indexes
+     // in an array, so start from 0.
      AUTH_PROXY = 0,
      AUTH_SERVER = 1,
    };
 
    // Describes where the identity used for authentication came from.
    enum IdentitySource {
      // Came from nowhere -- the identity is not initialized.
      IDENT_SRC_NONE,
 
      // The identity came from the auth cache, by doing a path-based
@@ skipping 121 matching lines @@
     std::string::const_iterator value_begin_;
     std::string::const_iterator value_end_;
 
     bool value_is_quoted_;
   };
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_AUTH_H_