Various QUIC cleanups to sync with internal code.

net/quic/test_tools/quic_test_utils.cc

Index: net/quic/test_tools/quic_test_utils.cc
diff --git a/net/quic/test_tools/quic_test_utils.cc b/net/quic/test_tools/quic_test_utils.cc
index 4f04266842bb634ff0b26c54a49dc855f1ca3651..db4e1f3dbf9ad349afecc8afc1bbd9da5167956e 100644
--- a/net/quic/test_tools/quic_test_utils.cc
+++ b/net/quic/test_tools/quic_test_utils.cc
@@ -511,12 +511,6 @@ size_t GetPacketLengthForOneStream(
           sequence_number_length, is_in_fec_group);
 }
 
-// Size in bytes of the stream frame fields for an arbitrary StreamID and
-// offset and the last frame in a packet.
-size_t GetMinStreamFrameSize(QuicVersion version) {
-  return kQuicFrameTypeSize + kQuicMaxStreamIdSize + kQuicMaxStreamOffsetSize;
-}
-
 TestEntropyCalculator::TestEntropyCalculator() { }
 
 TestEntropyCalculator::~TestEntropyCalculator() { }