Make HSTS headers not clobber preloaded pins.

net/url_request/url_request_http_job.cc

Index: net/url_request/url_request_http_job.cc
diff --git a/net/url_request/url_request_http_job.cc b/net/url_request/url_request_http_job.cc
index c5c209ce7cb7a1ae9c99c8e66eb83518ffbd9306..5c747ba2025db2cad3da504fa6b8b2f817350b9c 100644
--- a/net/url_request/url_request_http_job.cc
+++ b/net/url_request/url_request_http_job.cc
@@ -841,14 +841,11 @@ void URLRequestHttpJob::OnStartCompleted(int result) {
       NotifySSLCertificateError(info, true);
     } else {
       // Maybe overridable, maybe not. Ask the delegate to decide.
-      TransportSecurityState::DomainState domain_state;
       const URLRequestContext* context = request_->context();
-      const bool fatal = context->transport_security_state() &&
-          context->transport_security_state()->GetDomainState(
-              request_info_.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(
+          request_info_.url.host(),
+          SSLConfigService::IsSNIAvailable(context->ssl_config_service()));
       NotifySSLCertificateError(
           transaction_->GetResponseInfo()->ssl_info, fatal);
     }