QUIC TlsClientHandshaker: Demote some INFO logs to DLOG.

These logs are not very useful in production and can be super spammy.

PiperOrigin-RevId: 658393754

quiche/quic/core/tls_client_handshaker.cc

diff --git a/quiche/quic/core/tls_client_handshaker.cc b/quiche/quic/core/tls_client_handshaker.cc
index 76cf4f2..dd8feb6 100644
--- a/quiche/quic/core/tls_client_handshaker.cc
+++ b/quiche/quic/core/tls_client_handshaker.cc
@@ -525,7 +525,7 @@
 
   QUICHE_CHECK(!SSL_in_early_data(ssl()));
 
-  QUIC_LOG(INFO) << "Client: handshake finished";
+  QUIC_DLOG(INFO) << "Client: handshake finished";
 
   std::string error_details;
   if (!ProcessTransportParameters(&error_details)) {
@@ -622,7 +622,7 @@
 }
 
 void TlsClientHandshaker::HandleZeroRttReject() {
-  QUIC_LOG(INFO) << "0-RTT handshake attempted but was rejected by the server";
+  QUIC_DLOG(INFO) << "0-RTT handshake attempted but was rejected by the server";
   QUICHE_DCHECK(session_cache_);
   // Disable encrytion to block outgoing data until 1-RTT keys are available.
   encryption_established_ = false;