Revert "Revert of QUIC - Race Cert Verification with host resolution if

net/quic/crypto/proof_verifier.h

 // Copyright (c) 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_PROOF_VERIFIER_H_
 #define NET_QUIC_CRYPTO_PROOF_VERIFIER_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 68 matching lines @@
       const std::string& server_config,
       QuicVersion quic_version,
       base::StringPiece chlo_hash,
       const std::vector<std::string>& certs,
       const std::string& cert_sct,
       const std::string& signature,
       const ProofVerifyContext* context,
       std::string* error_details,
       std::unique_ptr<ProofVerifyDetails>* details,
       std::unique_ptr<ProofVerifierCallback> callback) = 0;
+
+  // VerifyCertChain checks that |certs| is a valid chain for |hostname|. On
+  // success, it returns QUIC_SUCCESS. On failure, it returns QUIC_FAILURE and
+  // sets |*error_details| to a description of the problem. In either case it
+  // may set |*details|, which the caller takes ownership of.
+  //
+  // |context| specifies an implementation specific struct (which may be nullptr
+  // for some implementations) that provides useful information for the
+  // verifier, e.g. logging handles.
+  //
+  // This function may also return QUIC_PENDING, in which case the ProofVerifier
+  // will call back, on the original thread, via |callback| when complete.
+  // In this case, the ProofVerifier will take ownership of |callback|.
+  virtual QuicAsyncStatus VerifyCertChain(
+      const std::string& hostname,
+      const std::vector<std::string>& certs,
+      const ProofVerifyContext* context,
+      std::string* error_details,
+      std::unique_ptr<ProofVerifyDetails>* details,
+      std::unique_ptr<ProofVerifierCallback> callback) = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CRYPTO_PROOF_VERIFIER_H_