Report unpermitted interface requests as bad messages

services/shell/public/cpp/lib/interface_registry.cc

Index: services/shell/public/cpp/lib/interface_registry.cc
diff --git a/services/shell/public/cpp/lib/interface_registry.cc b/services/shell/public/cpp/lib/interface_registry.cc
index 6f79a510b3f72905d9f6a9ee430f5de7ad66c5e7..f992e7da60f0d412438ab19bd2cdad457909add1 100644
--- a/services/shell/public/cpp/lib/interface_registry.cc
+++ b/services/shell/public/cpp/lib/interface_registry.cc
@@ -4,6 +4,9 @@
 
 #include "services/shell/public/cpp/interface_registry.h"
 
+#include <sstream>
+
+#include "mojo/public/cpp/bindings/message.h"
 #include "services/shell/public/cpp/connection.h"
 
 namespace shell {
@@ -90,9 +93,11 @@ void InterfaceRegistry::GetInterface(const std::string& interface_name,
                                 interface_name,
                                 std::move(handle));
   } else if (!CanBindRequestForInterface(interface_name)) {
-    LOG(ERROR) << "Capability spec prevented service: "
-               << remote_identity_.name()
-               << " from binding interface: " << interface_name;
+    std::stringstream ss;
+    ss << "Capability spec prevented service " << remote_identity_.name()
+       << " from binding interface: " << interface_name;
+    LOG(ERROR) << ss.str();
+    mojo::ReportBadMessage(ss.str());
   } else if (!default_binder_.is_null()) {
     default_binder_.Run(interface_name, std::move(handle));
   } else {