| Index: src/runtime.cc | 
| diff --git a/src/runtime.cc b/src/runtime.cc | 
| index 6d7fca973450fb8e39bdb74e7bc49dea2f63957e..25df9bf8465e08b4169b9448033b6fb6b84f5172 100644 | 
| --- a/src/runtime.cc | 
| +++ b/src/runtime.cc | 
| @@ -5521,6 +5521,15 @@ RUNTIME_FUNCTION(Runtime_DebugPromiseHandleEpilogue) { | 
| } | 
|  | 
|  | 
| +RUNTIME_FUNCTION(Runtime_DebugPromiseEvent) { | 
| +  ASSERT(args.length() == 1); | 
| +  HandleScope scope(isolate); | 
| +  CONVERT_ARG_HANDLE_CHECKED(JSObject, data, 0); | 
| +  isolate->debug()->OnPromiseEvent(data); | 
| +  return isolate->heap()->undefined_value(); | 
| +} | 
| + | 
| + | 
| // Set an own property, even if it is READ_ONLY.  If the property does not | 
| // exist, it will be added with attributes NONE. | 
| RUNTIME_FUNCTION(Runtime_IgnoreAttributesAndSetProperty) { | 
|  |