Support specifying the GSSAPI library that will be used.

net/http/http_auth_sspi_win.h

 // 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.
 
 // This file contains common routines used by NTLM and Negotiate authentication
 // using the SSPI API on Windows.
 
 #ifndef NET_HTTP_HTTP_AUTH_SSPI_WIN_H_
 #define NET_HTTP_HTTP_AUTH_SSPI_WIN_H_
 #pragma once
@@ skipping 45 matching lines @@
                                                     PTimeStamp ptsExpiry) = 0;
 
   virtual SECURITY_STATUS QuerySecurityPackageInfo(LPWSTR pszPackageName,
                                                    PSecPkgInfoW *pkgInfo) = 0;
 
   virtual SECURITY_STATUS FreeCredentialsHandle(PCredHandle phCredential) = 0;
 
   virtual SECURITY_STATUS DeleteSecurityContext(PCtxtHandle phContext) = 0;
 
   virtual SECURITY_STATUS FreeContextBuffer(PVOID pvContextBuffer) = 0;
-
-  // Get the default SSPILibrary instance, which simply acts as a passthrough
-  // to the Windows SSPI implementation. The object returned is a singleton
-  // instance, and the caller should not delete it.
-  static SSPILibrary* GetDefault();
 };
 
 class HttpAuthSSPI {
  public:
   HttpAuthSSPI(SSPILibrary* sspi_library,
                const std::string& scheme,
                SEC_WCHAR* security_package,
                ULONG max_token_length);
   ~HttpAuthSSPI();
 
@@ skipping 66 matching lines @@
 // If the return value is ERR_UNEXPECTED, there was an unanticipated problem
 // in the underlying SSPI call. The details are logged, and |*max_token_length|
 // is not changed.
 int DetermineMaxTokenLength(SSPILibrary* library,
                             const std::wstring& package,
                             ULONG* max_token_length);
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_AUTH_SSPI_WIN_H_