Plumbing for TCP FastOpen for SSL sockets.

net/socket/transport_client_socket_pool.cc

Index: net/socket/transport_client_socket_pool.cc
diff --git a/net/socket/transport_client_socket_pool.cc b/net/socket/transport_client_socket_pool.cc
index cf247c032706793693d28b4ee8ba91848d140bff..e55ec7542a5a949cb4996409916ea133a0c6caf7 100644
--- a/net/socket/transport_client_socket_pool.cc
+++ b/net/socket/transport_client_socket_pool.cc
@@ -63,7 +63,22 @@ TransportSocketParams::TransportSocketParams(
     const OnHostResolutionCallback& host_resolution_callback)
     : destination_(host_port_pair),
       ignore_limits_(ignore_limits),
-      host_resolution_callback_(host_resolution_callback) {
+      host_resolution_callback_(host_resolution_callback),
+      use_tcp_fastopen_if_supported_(false) {
+  if (disable_resolver_cache)
+    destination_.set_allow_cached_response(false);
+}
+
+TransportSocketParams::TransportSocketParams(
+    const HostPortPair& host_port_pair,
+    bool disable_resolver_cache,
+    bool ignore_limits,
+    const OnHostResolutionCallback& host_resolution_callback,
+    bool use_tcp_fastopen_if_supported)
+    : destination_(host_port_pair),
+      ignore_limits_(ignore_limits),
+      host_resolution_callback_(host_resolution_callback),
+      use_tcp_fastopen_if_supported_(use_tcp_fastopen_if_supported) {
   if (disable_resolver_cache)
     destination_.set_allow_cached_response(false);
 }
@@ -261,6 +276,10 @@ int TransportConnectJob::DoTransportConnect() {
   transport_socket_ =
       helper_.client_socket_factory()->CreateTransportClientSocket(
           helper_.addresses(), net_log().net_log(), net_log().source());
+
+  if (helper_.params()->use_tcp_fastopen_if_supported())
+    transport_socket_->EnableTCPFastOpen();
+
   int rv = transport_socket_->Connect(helper_.on_io_complete());
   if (rv == ERR_IO_PENDING &&
       helper_.addresses().front().GetFamily() == ADDRESS_FAMILY_IPV6 &&