Land Recent QUIC changes.

net/quic/crypto/crypto_handshake.cc

Index: net/quic/crypto/crypto_handshake.cc
diff --git a/net/quic/crypto/crypto_handshake.cc b/net/quic/crypto/crypto_handshake.cc
index c0688b4c2812a063665bcc192d620f51dd8fed6f..00cc342060b718349b4c97afc7c7e2012220a26a 100644
--- a/net/quic/crypto/crypto_handshake.cc
+++ b/net/quic/crypto/crypto_handshake.cc
@@ -573,6 +573,13 @@ void QuicCryptoClientConfig::FillInchoateClientHello(
 #endif
   }
 
+  if (proof_verifier_.get() && !cached->proof_valid()) {
+    // If we are expecting a certificate chain, double the size of the client
+    // hello so that the response from the server can be larger - hopefully
+    // including the whole certificate chain.
+    out->set_minimum_size(kClientHelloMinimumSize * 2);
+  }
+
   if (common_cert_sets) {
     out->SetStringPiece(kCCS, common_cert_sets->GetCommonHashes());
   }