Make HSTS headers not clobber preloaded pins.

net/socket_stream/socket_stream.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.
 //
 // TODO(ukai): code is similar with http_network_transaction.cc.  We should
 //   think about ways to share code, if possible.
 
 #include "net/socket_stream/socket_stream.h"
 
 #include <set>
@@ skipping 1319 matching lines @@
     if (session_params && session_params->ignore_certificate_errors)
       return OK;
   }
 
   if (!delegate_)
     return result;
 
   SSLInfo ssl_info;
   ssl_socket->GetSSLInfo(&ssl_info);
 
-  TransportSecurityState::DomainState domain_state;
-  const bool fatal = context_->transport_security_state() &&
-      context_->transport_security_state()->GetDomainState(url_.host(),
-          SSLConfigService::IsSNIAvailable(context_->ssl_config_service()),
-          &domain_state) &&
-      domain_state.ShouldSSLErrorsBeFatal();
+  TransportSecurityState* state = context_->transport_security_state();
+  const bool fatal = state &&
+      state->ShouldSSLErrorsBeFatal(url_.host(),
+          SSLConfigService::IsSNIAvailable(context_->ssl_config_service()));
 
   delegate_->OnSSLCertificateError(this, ssl_info, fatal);
   return ERR_IO_PENDING;
 }
 
 CookieStore* SocketStream::cookie_store() const {
   return cookie_store_;
 }
 
 }  // namespace net