Fixes bugs in packet size computation in the creator and in the framer

net/tools/quic/test_tools/quic_test_utils.h

Index: net/tools/quic/test_tools/quic_test_utils.h
diff --git a/net/tools/quic/test_tools/quic_test_utils.h b/net/tools/quic/test_tools/quic_test_utils.h
index 8eb0a57e4810bcdfcbb9a28780ce0ae891d309f2..44dbd2bdf87c133c57e543752b067afde46b74ec 100644
--- a/net/tools/quic/test_tools/quic_test_utils.h
+++ b/net/tools/quic/test_tools/quic_test_utils.h
@@ -29,6 +29,11 @@ static const QuicConnectionId kTestConnectionId = 42;
 static const int kTestPort = 123;
 static const uint32 kInitialFlowControlWindowForTest = 32 * 1024;  // 32 KB
 
+// Testing convenience method to construct a QuicAckFrame with |num_nack_ranges|
+// nack ranges of width 1 packet, starting from |least_unacked|.
+QuicAckFrame MakeAckFrameWithNackRanges(size_t num_nack_ranges,
+                                        QuicPacketSequenceNumber least_unacked);
+
 // Simple random number generator used to compute random numbers suitable
 // for pseudo-randomly dropping packets in tests.  It works by computing
 // the sha1 hash of the current seed, and using the first 64 bits as