Support specifying the GSSAPI library that will be used.

net/http/http_auth_gssapi_posix.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.
 
 #ifndef NET_HTTP_HTTP_AUTH_GSSAPI_POSIX_H_
 #define NET_HTTP_HTTP_AUTH_GSSAPI_POSIX_H_
 #pragma once
 
 #include <string>
 
@@ skipping 77 matching lines @@
       OM_uint32* minor_status,
       const gss_ctx_id_t context_handle,
       gss_name_t* src_name,
       gss_name_t* targ_name,
       OM_uint32* lifetime_rec,
       gss_OID* mech_type,
       OM_uint32* ctx_flags,
       int* locally_initiated,
       int* open) = 0;
 
-  // Get the default GSSPILibrary instance. The object returned is a singleton
-  // instance, and the caller should not delete it.
-  static GSSAPILibrary* GetDefault();
 };
 
 // GSSAPISharedLibrary class is defined here so that unit tests can access it.
 class GSSAPISharedLibrary : public GSSAPILibrary {
  public:
-  GSSAPISharedLibrary();
+  // Pass an empty string for |gssapi_library_name| to fall back to hard-coded
+  // default library names.
+  explicit GSSAPISharedLibrary(const std::string& gssapi_library_name);
   virtual ~GSSAPISharedLibrary();
 
   // GSSAPILibrary methods:
   virtual bool Init();
   virtual OM_uint32 import_name(
       OM_uint32* minor_status,
       const gss_buffer_t input_name_buffer,
       const gss_OID input_name_type,
       gss_name_t* output_name);
   virtual OM_uint32 release_name(
@@ skipping 55 matching lines @@
 
   bool InitImpl();
   // Finds a usable dynamic library for GSSAPI and loads it.  The criteria are:
   //   1. The library must exist.
   //   2. The library must export the functions we need.
   base::NativeLibrary LoadSharedLibrary();
   bool BindMethods(base::NativeLibrary lib);
 
   bool initialized_;
 
+  std::string gssapi_library_name_;
   // Need some way to invalidate the library.
   base::NativeLibrary gssapi_library_;
 
   // Function pointers
   gss_import_name_type import_name_;
   gss_release_name_type release_name_;
   gss_release_buffer_type release_buffer_;
   gss_display_name_type display_name_;
   gss_display_status_type display_status_;
   gss_init_sec_context_type init_sec_context_;
@@ skipping 62 matching lines @@
   gss_OID gss_oid_;
   GSSAPILibrary* library_;
   std::string decoded_server_auth_token_;
   ScopedSecurityContext scoped_sec_context_;
   bool can_delegate_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_AUTH_GSSAPI_POSIX_H_