Don't try to use explicit credentials with schemes that don't support it.

net/http/http_auth_handler_mock.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 "net/http/http_auth_handler_mock.h"
 
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_request_info.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 
 HttpAuthHandlerMock::HttpAuthHandlerMock()
   : resolve_(RESOLVE_INIT), user_callback_(NULL),
     ALLOW_THIS_IN_INITIALIZER_LIST(method_factory_(this)),
     generate_async_(false), generate_rv_(OK),
     auth_token_(NULL),
     first_round_(true),
-    connection_based_(false) {
+    connection_based_(false),
+    allows_default_credentials_(false),
+    allows_explicit_credentials_(true) {
 }
 
 HttpAuthHandlerMock::~HttpAuthHandlerMock() {
 }
 
 void HttpAuthHandlerMock::SetResolveExpectation(Resolve resolve) {
   EXPECT_EQ(RESOLVE_INIT, resolve_);
   resolve_ = resolve;
 }
 
@@ skipping 34 matching lines @@
   return rv;
 }
 
 void HttpAuthHandlerMock::SetGenerateExpectation(bool async, int rv) {
   generate_async_ = async;
   generate_rv_ = rv;
 }
 
 HttpAuth::AuthorizationResult HttpAuthHandlerMock::HandleAnotherChallenge(
     HttpAuth::ChallengeTokenizer* challenge) {
-  if (!is_connection_based())
+  // If we receive an empty challenge for a connection based scheme, or a second
+  // challenge for a non connection based scheme, assume it's a rejection.
+  if (!is_connection_based() || challenge->base64_param().empty())
     return HttpAuth::AUTHORIZATION_RESULT_REJECT;
   if (!LowerCaseEqualsASCII(challenge->scheme(), "mock"))
     return HttpAuth::AUTHORIZATION_RESULT_INVALID;
   return HttpAuth::AUTHORIZATION_RESULT_ACCEPT;
 }
 
 bool HttpAuthHandlerMock::NeedsIdentity() {
   return first_round_;
 }
 
+bool HttpAuthHandlerMock::AllowsDefaultCredentials() {
+  return allows_default_credentials_;
+}
+
+bool HttpAuthHandlerMock::AllowsExplicitCredentials() {
+  return allows_explicit_credentials_;
+}
+
 bool HttpAuthHandlerMock::Init(HttpAuth::ChallengeTokenizer* challenge) {
   auth_scheme_ = HttpAuth::AUTH_SCHEME_MOCK;
   score_ = 1;
   properties_ = connection_based_ ? IS_CONNECTION_BASED : 0;
   return true;
 }
 
 int HttpAuthHandlerMock::GenerateAuthTokenImpl(const string16* username,
                                                const string16* password,
                                                const HttpRequestInfo* request,
@@ skipping 64 matching lines @@
   std::vector<HttpAuthHandler*>& handlers = handlers_[target].get();
   handlers.erase(handlers.begin());
   if (do_init_from_challenge_ &&
       !tmp_handler->InitFromChallenge(challenge, target, origin, net_log))
     return ERR_INVALID_RESPONSE;
   handler->swap(tmp_handler);
   return OK;
 }
 
 }  // namespace net