Update from https://crrev.com/311076

net/http/http_stream_factory_impl_job.cc

Index: net/http/http_stream_factory_impl_job.cc
diff --git a/net/http/http_stream_factory_impl_job.cc b/net/http/http_stream_factory_impl_job.cc
index 83694437450b028590ae8617ad8ce1ec05071154..d531476c81b8964868133fb85672f2f860feb357 100644
--- a/net/http/http_stream_factory_impl_job.cc
+++ b/net/http/http_stream_factory_impl_job.cc
@@ -817,6 +817,16 @@ int HttpStreamFactoryImpl::Job::DoInitConnection() {
                   false /* not a proxy server */);
   }
 
+  base::WeakPtr<HttpServerProperties> http_server_properties =
+      session_->http_server_properties();
+  if (http_server_properties) {
+    http_server_properties->MaybeForceHTTP11(origin_, &server_ssl_config_);
+    if (proxy_info_.is_http() || proxy_info_.is_https()) {
+      http_server_properties->MaybeForceHTTP11(
+          proxy_info_.proxy_server().host_port_pair(), &proxy_ssl_config_);
+    }
+  }
+
   if (IsPreconnecting()) {
     DCHECK(!stream_factory_->for_websockets_);
     return PreconnectSocketsForHttpRequest(