Log info about QUIC inchoate rejects, since we expect to "never"

net/quic/core/crypto/quic_crypto_server_config.cc

Index: net/quic/core/crypto/quic_crypto_server_config.cc
diff --git a/net/quic/core/crypto/quic_crypto_server_config.cc b/net/quic/core/crypto/quic_crypto_server_config.cc
index 2c843a6161567a2bae47f6bad855c2a3a7dc40e8..8557271c2c762f0086c8eb096b07b2e85b9aab7b 100644
--- a/net/quic/core/crypto/quic_crypto_server_config.cc
+++ b/net/quic/core/crypto/quic_crypto_server_config.cc
@@ -1516,9 +1516,9 @@ void QuicCryptoServerConfig::BuildRejection(
   bool should_return_sct =
       params->sct_supported_by_client && enable_serving_sct_;
   const size_t sct_size = should_return_sct ? crypto_proof.cert_sct.size() : 0;
-  if (info.valid_source_address_token ||
-      crypto_proof.signature.size() + compressed.size() + sct_size <
-          max_unverified_size) {
+  const size_t total_size =
+      crypto_proof.signature.size() + compressed.size() + sct_size;
+  if (info.valid_source_address_token || total_size < max_unverified_size) {
     out->SetStringPiece(kCertificateTag, compressed);
     out->SetStringPiece(kPROF, crypto_proof.signature);
     if (should_return_sct) {
@@ -1528,6 +1528,14 @@ void QuicCryptoServerConfig::BuildRejection(
         out->SetStringPiece(kCertificateSCTTag, crypto_proof.cert_sct);
       }
     }
+  } else {
+    if (FLAGS_quic_use_chlo_packet_size) {
+      DLOG(WARNING)
+          << "Sending inchoate REJ for hostname: " << info.sni
+          << " signature: " << crypto_proof.signature.size()
+          << " cert: " << compressed.size() << " sct:" << sct_size
+          << " total: " << total_size << " max: " << max_unverified_size;
+    }
   }
 }