Linux: control usage of Kerberos via use_kerberos gyp flag

net/http/http_auth_unittest.cc

 // Copyright (c) 2011 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.
 
 #include <set>
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string_util.h"
@@ skipping 85 matching lines @@
     },
     {
       // Handle an empty header correctly.
       "Y: Digest realm=\"X\", nonce=\"aaaaaaaaaa\"\n"
       "www-authenticate:\n",
 
       HttpAuth::AUTH_SCHEME_MAX,
       "",
     },
     {
+      "WWW-Authenticate: Negotiate\n"
+      "WWW-Authenticate: NTLM\n",
+
+#if defined(USE_KERBEROS)
       // Choose Negotiate over NTLM on all platforms.
       // TODO(ahendrickson): This may be flaky on Linux and OSX as it
       // relies on being able to load one of the known .so files
       // for gssapi.
-      "WWW-Authenticate: Negotiate\n"
-      "WWW-Authenticate: NTLM\n",
-
       HttpAuth::AUTH_SCHEME_NEGOTIATE,
+#else
+      // On systems that don't use Kerberos fall back to NTLM.
+      HttpAuth::AUTH_SCHEME_NTLM,
+#endif  // defined(USE_KERBEROS)
       "",
     }
   };
   GURL origin("http://www.example.com");
   std::set<HttpAuth::Scheme> disabled_schemes;
   MockAllowURLSecurityManager url_security_manager;
   scoped_ptr<HostResolver> host_resolver(new MockHostResolver());
   scoped_ptr<HttpAuthHandlerRegistryFactory> http_auth_handler_factory(
       HttpAuthHandlerFactory::CreateDefault(host_resolver.get()));
   http_auth_handler_factory->SetURLSecurityManager(
@@ skipping 297 matching lines @@
   std::string name;
 
   name = HttpAuth::GetAuthorizationHeaderName(HttpAuth::AUTH_SERVER);
   EXPECT_STREQ("Authorization", name.c_str());
 
   name = HttpAuth::GetAuthorizationHeaderName(HttpAuth::AUTH_PROXY);
   EXPECT_STREQ("Proxy-Authorization", name.c_str());
 }
 
 }  // namespace net