Allow TrustStore queries to be asynchronous.

net/cert/internal/trust_store.cc

 // Copyright 2016 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.
 
 #include "net/cert/internal/trust_store.h"
 
 namespace net {
 
 scoped_refptr<TrustAnchor> TrustAnchor::CreateFromCertificateNoConstraints(
     scoped_refptr<ParsedCertificate> cert) {
@@ skipping 18 matching lines @@
 }
 
 TrustAnchor::TrustAnchor(scoped_refptr<ParsedCertificate> cert,
                          bool enforces_constraints)
     : cert_(std::move(cert)), enforces_constraints_(enforces_constraints) {
   DCHECK(cert_);
 }
 
 TrustAnchor::~TrustAnchor() = default;
 
+TrustStore::Request::Request() = default;
+TrustStore::Request::~Request() = default;
+
 TrustStore::TrustStore() = default;
 TrustStore::~TrustStore() = default;
 
 }  // namespace net