net: remove UsingTCPFastOpen() method from StreamSocket class

jingle/glue/fake_ssl_client_socket.cc

Index: jingle/glue/fake_ssl_client_socket.cc
diff --git a/jingle/glue/fake_ssl_client_socket.cc b/jingle/glue/fake_ssl_client_socket.cc
index a61d3591659f73f3ba1f1a792b40a82a35d3c22f..583b54e1eef169f197f2fb207fcb142d10ab8b5b 100644
--- a/jingle/glue/fake_ssl_client_socket.cc
+++ b/jingle/glue/fake_ssl_client_socket.cc
@@ -331,10 +331,6 @@ bool FakeSSLClientSocket::WasEverUsed() const {
   return transport_socket_->WasEverUsed();
 }
 
-bool FakeSSLClientSocket::UsingTCPFastOpen() const {
-  return transport_socket_->UsingTCPFastOpen();
-}
-
 bool FakeSSLClientSocket::WasNpnNegotiated() const {
   return transport_socket_->WasNpnNegotiated();
 }