API changes to Write path Session on down for FEC protection.

net/quic/quic_connection.cc

Index: net/quic/quic_connection.cc
diff --git a/net/quic/quic_connection.cc b/net/quic/quic_connection.cc
index 76fe0a7f52a66d70dc23e983dce753bfa7b92fb2..7be5fc781cbe521c1d5e81265eff4dce01f63dd9 100644
--- a/net/quic/quic_connection.cc
+++ b/net/quic/quic_connection.cc
@@ -989,6 +989,7 @@ QuicConsumedData QuicConnection::SendStreamData(
     const IOVector& data,
     QuicStreamOffset offset,
     bool fin,
+    FecProtection fec_protection,
     QuicAckNotifier::DelegateInterface* delegate) {
   if (!fin && data.Empty()) {
     LOG(DFATAL) << "Attempt to send empty stream frame";
@@ -1016,7 +1017,8 @@ QuicConsumedData QuicConnection::SendStreamData(
   // processing left that may cause received_info_ to change.
   ScopedPacketBundler ack_bundler(this, BUNDLE_PENDING_ACK);
   QuicConsumedData consumed_data =
-      packet_generator_.ConsumeData(id, data, offset, fin, notifier);
+      packet_generator_.ConsumeData(id, data, offset, fin, fec_protection,
+                                    notifier);
 
   if (notifier &&
       (consumed_data.bytes_consumed == 0 && !consumed_data.fin_consumed)) {
@@ -1570,7 +1572,8 @@ void QuicConnection::SendPing() {
     char c_data[] = "C";
     data.Append(c_data, 1);
     QuicConsumedData consumed_data =
-        packet_generator_.ConsumeData(kCryptoStreamId, data, 0, false, NULL);
+        packet_generator_.ConsumeData(kCryptoStreamId, data, 0, false,
+                                      MAY_FEC_PROTECT, NULL);
     if (consumed_data.bytes_consumed == 0) {
       DLOG(ERROR) << "Unable to send ping!?";
     }