Update from https://crrev.com/311076

net/http/http_network_transaction.h

Index: net/http/http_network_transaction.h
diff --git a/net/http/http_network_transaction.h b/net/http/http_network_transaction.h
index e69e550b2aabc30fa73a94f3b189aaa9e9ad4a15..229d3971b1f37c6cfe960150841c36b848d2c15f 100644
--- a/net/http/http_network_transaction.h
+++ b/net/http/http_network_transaction.h
@@ -185,6 +185,10 @@ class NET_EXPORT_PRIVATE HttpNetworkTransaction
   // Called to handle a client certificate request.
   int HandleCertificateRequest(int error);
 
+  // Called wherever ERR_HTTP_1_1_REQUIRED or
+  // ERR_PROXY_HTTP_1_1_REQUIRED has to be handled.
+  int HandleHttp11Required(int error);
+
   // Called to possibly handle a client authentication error.
   void HandleClientAuthError(int error);