DNR Prototype: With flatbuffers

extensions/browser/mock_extension_system.cc

Index: extensions/browser/mock_extension_system.cc
diff --git a/extensions/browser/mock_extension_system.cc b/extensions/browser/mock_extension_system.cc
index 621fe93a7117e13142ea98b12c4ff6c9498ac3e7..bb5226fba29bf0e50146f795e4f0bb032ea6b64f 100644
--- a/extensions/browser/mock_extension_system.cc
+++ b/extensions/browser/mock_extension_system.cc
@@ -71,6 +71,10 @@ ContentVerifier* MockExtensionSystem::content_verifier() {
   return nullptr;
 }
 
+declarative_net_request::RulesMonitor* MockExtensionSystem::rules_monitor() {
+  return nullptr;
+}
+
 std::unique_ptr<ExtensionSet> MockExtensionSystem::GetDependentExtensions(
     const Extension* extension) {
   return std::unique_ptr<ExtensionSet>();