Gracefully handle NULL CertVerifiers in SSLClientSocket.

net/socket/ssl_client_socket_openssl.cc

 // Copyright (c) 2012 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.
 
 // OpenSSL binding for SSLClientSocket. The class layout and general principle
 // of operation is derived from SSLClientSocketNSS.
 
 #include "net/socket/ssl_client_socket_openssl.h"
 
 #include <errno.h>
@@ skipping 1061 matching lines @@
 
   // When running in a sandbox, it may not be possible to create an
   // X509Certificate*, as that may depend on OS functionality blocked
   // in the sandbox.
   if (!server_cert_.get()) {
     server_cert_verify_result_.Reset();
     server_cert_verify_result_.cert_status = CERT_STATUS_INVALID;
     return ERR_CERT_INVALID;
   }
 
+  if (!cert_verifier_) {
+    // Without a CertVerifier, all certificates are invalid.
+    server_cert_verify_result_.cert_status = CERT_STATUS_INVALID;
+    return ERR_CERT_INVALID;
+  }
+
   start_cert_verification_time_ = base::TimeTicks::Now();
 
   int flags = 0;
   if (ssl_config_.rev_checking_enabled)
     flags |= CertVerifier::VERIFY_REV_CHECKING_ENABLED;
   if (ssl_config_.verify_ev_cert)
     flags |= CertVerifier::VERIFY_EV_CERT;
   if (ssl_config_.cert_io_enabled)
     flags |= CertVerifier::VERIFY_CERT_IO_ENABLED;
   if (ssl_config_.rev_checking_required_local_anchors)
@@ skipping 826 matching lines @@
 
   return result;
 }
 
 scoped_refptr<X509Certificate>
 SSLClientSocketOpenSSL::GetUnverifiedServerCertificateChain() const {
   return server_cert_;
 }
 
 }  // namespace net