Land Recent QUIC Changes until 03/25/2015.

net/quic/quic_packet_creator.h

 // Copyright (c) 2012 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.
 //
 // Accumulates frames for the next packet until more frames no longer fit or
 // it's time to create a packet from them.  Also provides packet creation of
 // FEC packets based on previously created packets.
 
 #ifndef NET_QUIC_QUIC_PACKET_CREATOR_H_
 #define NET_QUIC_QUIC_PACKET_CREATOR_H_
@@ skipping 147 matching lines @@
   // that value as a member of SerializedPacket.
   SerializedPacket SerializeFec();
 
   // Creates a version negotiation packet which supports |supported_versions|.
   // Caller owns the created  packet. Also, sets the entropy hash of the
   // serialized packet to a random bool and returns that value as a member of
   // SerializedPacket.
   QuicEncryptedPacket* SerializeVersionNegotiationPacket(
       const QuicVersionVector& supported_versions);
 
+  // Returns a dummy packet that is valid but contains no useful information.
+  static SerializedPacket NoPacket();
+
   // Sets the encryption level that will be applied to new packets.
   void set_encryption_level(EncryptionLevel level) {
     encryption_level_ = level;
   }
 
   // Sequence number of the last created packet, or 0 if no packets have been
   // created.
   QuicPacketSequenceNumber sequence_number() const {
     return sequence_number_;
   }
@@ skipping 86 matching lines @@
   mutable size_t packet_size_;
   QuicFrames queued_frames_;
   scoped_ptr<RetransmittableFrames> queued_retransmittable_frames_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicPacketCreator);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PACKET_CREATOR_H_