Land Recent QUIC Changes until 03/06/2015.

net/quic/quic_protocol.h

Index: net/quic/quic_protocol.h
diff --git a/net/quic/quic_protocol.h b/net/quic/quic_protocol.h
index 7d33a8a437b21611974ba9fd1365382fcc7a7212..398a5fd4f20d69ae45cb7945ac23876432aa80ae 100644
--- a/net/quic/quic_protocol.h
+++ b/net/quic/quic_protocol.h
@@ -57,7 +57,8 @@ const QuicByteCount kDefaultServerMaxPacketSize = 1000;
 // additional 8 bytes.  This is a total overhead of 48 bytes.  Ethernet's
 // max packet size is 1500 bytes,  1500 - 48 = 1452.
 const QuicByteCount kMaxPacketSize = 1452;
-// Default maximum packet size used in Linux TCP implementations.
+// Default maximum packet size used in the Linux TCP implementation.
+// Used in QUIC for congestion window computations in bytes.
 const QuicByteCount kDefaultTCPMSS = 1460;
 
 // We match SPDY's use of 32 when secure (since we'd compete with SPDY).
@@ -592,6 +593,9 @@ struct NET_EXPORT_PRIVATE QuicPacketPublicHeader {
   QuicVersionVector versions;
 };
 
+// An integer which cannot be a packet sequence number.
+const QuicPacketSequenceNumber kInvalidPacketSequenceNumber = 0;
+
 // Header for Data or FEC packets.
 struct NET_EXPORT_PRIVATE QuicPacketHeader {
   QuicPacketHeader();