Clean up net unit testing code.

net/http/http_auth_handler_negotiate_unittest.cc

Index: net/http/http_auth_handler_negotiate_unittest.cc
diff --git a/net/http/http_auth_handler_negotiate_unittest.cc b/net/http/http_auth_handler_negotiate_unittest.cc
index 684ff55fd51e9219e61d3721943fef93b58e971e..bb57151ab37983674aa2a6bede6e9840a2b56084 100644
--- a/net/http/http_auth_handler_negotiate_unittest.cc
+++ b/net/http/http_auth_handler_negotiate_unittest.cc
@@ -10,6 +10,7 @@
 #include "net/base/net_errors.h"
 #include "net/base/test_completion_callback.h"
 #include "net/http/http_request_info.h"
+#include "net/http/mock_allow_url_security_manager.h"
 #if defined(OS_WIN)
 #include "net/http/mock_sspi_library_win.h"
 #elif defined(OS_POSIX)
@@ -36,7 +37,7 @@ class HttpAuthHandlerNegotiateTest : public PlatformTest {
     resolver_->rules()->AddIPLiteralRule("alias", "10.0.0.2",
                                            "canonical.example.com");
 
-    url_security_manager_.reset(new URLSecurityManagerAllow());
+    url_security_manager_.reset(new MockAllowURLSecurityManager());
     factory_.reset(new HttpAuthHandlerNegotiate::Factory());
     factory_->set_url_security_manager(url_security_manager_.get());
     factory_->set_library(auth_library_);