Add a convenience method to check for client supplied options in

net/quic/quic_sent_packet_manager.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_
 #define NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_
 
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 301 matching lines @@
   // retransmissions.  Does not add it to the retransmissions if it's already
   // a pending retransmission.
   void MarkForRetransmission(QuicPacketSequenceNumber sequence_number,
                              TransmissionType transmission_type);
 
   // Notify observers about spurious retransmits.
   void RecordSpuriousRetransmissions(
       const SequenceNumberList& all_transmissions,
       QuicPacketSequenceNumber acked_sequence_number);
 
+  // Returns true if the client is sending or the server has received a
+  // connection option.
+  bool HasClientSentConnectionOption(const QuicConfig& config,
+                                     QuicTag tag) const;
+
   // Newly serialized retransmittable and fec packets are added to this map,
   // which contains owning pointers to any contained frames.  If a packet is
   // retransmitted, this map will contain entries for both the old and the new
   // packet. The old packet's retransmittable frames entry will be NULL, while
   // the new packet's entry will contain the frames to retransmit.
   // If the old packet is acked before the new packet, then the old entry will
   // be removed from the map and the new entry's retransmittable frames will be
   // set to NULL.
   QuicUnackedPacketMap unacked_packets_;
 
@@ skipping 47 matching lines @@
   // Records bandwidth from server to client in normal operation, over periods
   // of time with no loss events.
   QuicSustainedBandwidthRecorder sustained_bandwidth_recorder_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicSentPacketManager);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_