[Extensions Bindings] Request JS execution from messaging bindings

extensions/renderer/native_extension_bindings_system.cc

Index: extensions/renderer/native_extension_bindings_system.cc
diff --git a/extensions/renderer/native_extension_bindings_system.cc b/extensions/renderer/native_extension_bindings_system.cc
index 10e7f08100cb61d275751d1c6180687e01605a70..9de510154a26493fcc32e234206730698b27d623 100644
--- a/extensions/renderer/native_extension_bindings_system.cc
+++ b/extensions/renderer/native_extension_bindings_system.cc
@@ -488,6 +488,14 @@ void NativeExtensionBindingsSystem::DispatchEventInContext(
                                  filter);
 }
 
+bool NativeExtensionBindingsSystem::HasEventListenerInContext(
+    const std::string& event_name,
+    ScriptContext* context) {
+  v8::HandleScope handle_scope(context->isolate());
+  return api_system_.event_handler()->HasListenerForEvent(
+      event_name, context->v8_context());
+}
+
 void NativeExtensionBindingsSystem::HandleResponse(
     int request_id,
     bool success,