Functionality to allow blacklist and whitelist of custom schemes

net/base/layered_network_delegate.cc

 // Copyright 2014 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/base/layered_network_delegate.h"
 
 #include <utility>
 
 namespace net {
 
@@ skipping 241 matching lines @@
                                                           referrer_url);
 }
 
 void LayeredNetworkDelegate::
     OnCancelURLRequestWithPolicyViolatingReferrerHeaderInternal(
         const URLRequest& request,
         const GURL& target_url,
         const GURL& referrer_url) const {
 }
 
+net::NetworkDelegate::URLBlacklistState
+LayeredNetworkDelegate::GetURLBlacklistState(const GURL& url) const {
+  return nested_network_delegate_->GetURLBlacklistState(url);
+}
+
 }  // namespace net