Minor refactors to enable sending an Expect-CT header more easily.

net/quic/core/crypto/quic_crypto_server_config.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_QUIC_CRYPTO_QUIC_CRYPTO_SERVER_CONFIG_H_
 #define NET_QUIC_CRYPTO_QUIC_CRYPTO_SERVER_CONFIG_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 842 matching lines @@
   QuicSignedServerConfig();
 
   // TODO(eranm): Have a QuicCryptoProof field instead of signature, cert_sct.
   std::string signature;
   scoped_refptr<ProofSource::Chain> chain;
   std::string cert_sct;
   // The server config that is used for this proof (and the rest of the
   // request).
   scoped_refptr<QuicCryptoServerConfig::Config> config;
   std::string primary_scid;
+  // Indication whether the Expect-CT header should be sent on the session
+  // this proof relates to (for background, see
+  // https://www.ietf.org/id/draft-stark-expect-ct-00.txt).
+  // NOTE: This field is intentionally independent from the |cert_sct| one
+  // and can be true even if |cert_sct| is empty.
+  // The goal of the Expect-CT header is uncover cases where valid SCTs are
+  // expected to be served, but aren't.
+  bool send_expect_ct_header;
 
  private:
   friend class base::RefCounted<QuicSignedServerConfig>;
   virtual ~QuicSignedServerConfig();
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CRYPTO_QUIC_CRYPTO_SERVER_CONFIG_H_