Fixed a bug in QuicPacketCreator when FEC was used for unsupported

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 97 matching lines @@
   SerializedPacket SerializeAllFrames(const QuicFrames& frames);
 
   // Re-serializes frames with the original packet's sequence number length.
   // Used for retransmitting packets to ensure they aren't too long.
   SerializedPacket ReserializeAllFrames(
       const QuicFrames& frames, QuicSequenceNumberLength original_length);
 
   // Returns true if there are frames pending to be serialized.
   bool HasPendingFrames();
 
+  // Returns IN_FEC_GROUP or NOT_IN_FEC_GROUP, depending on whether FEC is
+  // enabled or not. Note: This does not mean that an FEC group is currently
+  // active; i.e., fec_group_.get() may still be NULL.
+  // TODO(jri): Straighten out naming: Enabling FEC for the connection
+  // should use FEC_ENABLED/DISABLED, and IN_FEC_GROUP/NOT_IN_FEC_GROUP should
+  // be used if a given packet is in an fec group.
+  InFecGroup IsFecEnabled() const;
+
   // Returns the number of bytes which are available to be used by additional
   // frames in the packet.  Since stream frames are slightly smaller when they
   // are the last frame in a packet, this method will return a different
   // value than max_packet_size - PacketSize(), in this case.
   size_t BytesFree() const;
 
   // Returns the number of bytes that the packet will expand by if a new frame
   // is added to the packet. If the last frame was a stream frame, it will
   // expand slightly when a new frame is added, and this method returns the
   // amount of expected expansion. If the packet is in an FEC group, no
@@ skipping 97 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_