Plumbing for TCP FastOpen for SSL sockets.

net/socket/tcp_socket.h

Index: net/socket/tcp_socket.h
diff --git a/net/socket/tcp_socket.h b/net/socket/tcp_socket.h
index 8b36fade758e05db222d9fa4e2ee739e110b2779..04fd7d2ba6f7c64ea564bba56b76070d67d6daa0 100644
--- a/net/socket/tcp_socket.h
+++ b/net/socket/tcp_socket.h
@@ -16,13 +16,6 @@
 
 namespace net {
 
-// Enable/disable experimental TCP FastOpen option.
-// Not thread safe.  Must be called during initialization/startup only.
-NET_EXPORT void SetTCPFastOpenEnabled(bool value);
-
-// Check if the TCP FastOpen option is enabled.
-bool IsTCPFastOpenEnabled();
-
 // TCPSocket provides a platform-independent interface for TCP sockets.
 //
 // It is recommended to use TCPClientSocket/TCPServerSocket instead of this
@@ -35,6 +28,17 @@ typedef TCPSocketWin TCPSocket;
 typedef TCPSocketLibevent TCPSocket;
 #endif
 
+// Check if TCP FastOpen is supported by the OS.
+bool IsTCPFastOpenSupported();
+
+// Check if TCP FastOpen is enabled by the user.
+bool IsTCPFastOpenUserEnabled();
+
+// Checks if TCP FastOpen is supported by the kernel. Also enables TFO for all
+// connections if indicated by user.
+// Not thread safe.  Must be called during initialization/startup only.
+NET_EXPORT void CheckSupportAndMaybeEnableTCPFastOpen(bool user_enabled);
+
 }  // namespace net
 
 #endif  // NET_SOCKET_TCP_SOCKET_H_