UnregisterTryCatchHandler 1688 src/api.cc         isolate_->UnregisterTryCatchHandler(this);
UnregisterTryCatchHandler 1691 src/api.cc         isolate_->UnregisterTryCatchHandler(this);
UnregisterTryCatchHandler  774 src/isolate.h    void UnregisterTryCatchHandler(v8::TryCatch* that);