Functionality to allow blacklist and whitelist of custom schemes

net/base/layered_network_delegate.cc

Index: net/base/layered_network_delegate.cc
diff --git a/net/base/layered_network_delegate.cc b/net/base/layered_network_delegate.cc
index 9fe37196ccdaa73c3635baf863f3a1aaffce072c..5e571ac40fd2b796444b70922efc0203dcedac70 100644
--- a/net/base/layered_network_delegate.cc
+++ b/net/base/layered_network_delegate.cc
@@ -286,4 +286,9 @@ void LayeredNetworkDelegate::
         const GURL& referrer_url) const {
 }
 
+net::NetworkDelegate::URLBlacklistState
+LayeredNetworkDelegate::GetURLBlacklistState(const GURL& url) const {
+  return nested_network_delegate_->GetURLBlacklistState(url);
+}
+
 }  // namespace net