then               56 Source/bindings/v8/ScriptPromise.cpp ScriptPromise ScriptPromise::then(PassOwnPtr<ScriptFunction> onFulfilled, PassOwnPtr<ScriptFunction> onRejected)
then              766 Source/bindings/v8/custom/V8PromiseCustom.cpp v8::Local<v8::Object> V8PromiseCustom::then(v8::Handle<v8::Object> promise, v8::Handle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected, v8::Isolate* isolate)