HttpAuthHandlerFactory::CreateDefault requires a HostResolver argument.

chrome/browser/net/connection_tester.cc

Index: chrome/browser/net/connection_tester.cc
diff --git a/chrome/browser/net/connection_tester.cc b/chrome/browser/net/connection_tester.cc
index 5f71795eeb3fa2727b321cd41dad4170c9f50e06..4f9d943ab2eef4d96789e47f12466cdd30d54e52 100644
--- a/chrome/browser/net/connection_tester.cc
+++ b/chrome/browser/net/connection_tester.cc
@@ -54,7 +54,8 @@ class ExperimentURLRequestContext : public URLRequestContext {
     // experiment being run.
     ftp_transaction_factory_ = new net::FtpNetworkLayer(host_resolver_);
     ssl_config_service_ = new net::SSLConfigServiceDefaults;
-    http_auth_handler_factory_ = net::HttpAuthHandlerFactory::CreateDefault();
+    http_auth_handler_factory_ = net::HttpAuthHandlerFactory::CreateDefault(
+        host_resolver_);
     http_transaction_factory_ = new net::HttpCache(
         net::HttpNetworkLayer::CreateFactory(host_resolver_, proxy_service_,
             ssl_config_service_, http_auth_handler_factory_, NULL, NULL),