| Index: src/runtime/runtime-observe.cc | 
| diff --git a/src/runtime/runtime-observe.cc b/src/runtime/runtime-observe.cc | 
| index c03e31effcd0e716552c07fb3db7f4a0671d80c9..8fc201da0e66626169d5926aec80a6afb27efed3 100644 | 
| --- a/src/runtime/runtime-observe.cc | 
| +++ b/src/runtime/runtime-observe.cc | 
| @@ -58,7 +58,7 @@ RUNTIME_FUNCTION(Runtime_DeliverObservationChangeRecords) { | 
| DCHECK(args.length() == 2); | 
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, callback, 0); | 
| CONVERT_ARG_HANDLE_CHECKED(Object, argument, 1); | 
| -  v8::TryCatch catcher; | 
| +  v8::TryCatch catcher(reinterpret_cast<v8::Isolate*>(isolate)); | 
| // We should send a message on uncaught exception thrown during | 
| // Object.observe delivery while not interrupting further delivery, thus | 
| // we make a call inside a verbose TryCatch. | 
|  |