[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 b5226128fe67bc04f61abda1dcb72be96e5f2d05..4c9ab439b96a78f2a11c6cf09cf015fdeec35c97 100644
--- a/extensions/renderer/native_extension_bindings_system.cc
+++ b/extensions/renderer/native_extension_bindings_system.cc
@@ -492,6 +492,14 @@ 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,