Remove unused input argument. No functional change expected.

net/quic/quic_crypto_client_stream.cc

Index: net/quic/quic_crypto_client_stream.cc
diff --git a/net/quic/quic_crypto_client_stream.cc b/net/quic/quic_crypto_client_stream.cc
index 4da611d9f4141765c45e733d2130c92dba27c00b..cdd29515d12ebc407d684d3d03fd675b4ff5cf39 100644
--- a/net/quic/quic_crypto_client_stream.cc
+++ b/net/quic/quic_crypto_client_stream.cc
@@ -192,7 +192,7 @@ void QuicCryptoClientStream::DoHandshakeLoop(
         DoInitialize(cached);
         break;
       case STATE_SEND_CHLO:
-        DoSendCHLO(in, cached);
+        DoSendCHLO(cached);
         return;  // return waiting to hear from server.
       case STATE_RECV_REJ:
         DoReceiveREJ(in, cached);
@@ -242,7 +242,6 @@ void QuicCryptoClientStream::DoInitialize(
 }
 
 void QuicCryptoClientStream::DoSendCHLO(
-    const CryptoHandshakeMessage* in,
     QuicCryptoClientConfig::CachedState* cached) {
   if (stateless_reject_received_) {
     // If we've gotten to this point, we've sent at least one hello