[net/http auth] Make HttpAuthHandler challenge handling asynchronous.

net/http/http_auth_handler_factory.cc

Index: net/http/http_auth_handler_factory.cc
diff --git a/net/http/http_auth_handler_factory.cc b/net/http/http_auth_handler_factory.cc
index 3eb412e573fbc8362b9c22ea7cdce01aa0dc25de..067937344dd2a2adc9d25a7dd95c352082ee8944 100644
--- a/net/http/http_auth_handler_factory.cc
+++ b/net/http/http_auth_handler_factory.cc
@@ -167,7 +167,6 @@ HttpAuthHandlerRegistryFactory::CreateAuthHandlerForScheme(
 scoped_ptr<HttpAuthHandler>
 HttpAuthHandlerRegistryFactory::CreateAndInitPreemptiveAuthHandler(
     HttpAuthCache::Entry* cache_entry,
-    const HttpAuthChallengeTokenizer& tokenizer,
     HttpAuth::Target target,
     const BoundNetLog& net_log) {
   std::string scheme_name = cache_entry->scheme();
@@ -175,8 +174,8 @@ HttpAuthHandlerRegistryFactory::CreateAndInitPreemptiveAuthHandler(
   if (it == factory_map_.end())
     return scoped_ptr<HttpAuthHandler>();
   DCHECK(it->second);
-  return it->second->CreateAndInitPreemptiveAuthHandler(cache_entry, tokenizer,
-                                                        target, net_log);
+  return it->second->CreateAndInitPreemptiveAuthHandler(cache_entry, target,
+                                                        net_log);
 }
 
 }  // namespace net