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diff --git a/Source/JavaScriptCore/runtime/JSInternalPromiseDeferred.cpp b/Source/JavaScriptCore/runtime/JSInternalPromiseDeferred.cpp
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+++ b/Source/JavaScriptCore/runtime/JSInternalPromiseDeferred.cpp
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+/*
+ * Copyright (C) 2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "JSInternalPromiseDeferred.h"
+
+#include "BuiltinNames.h"
+#include "Error.h"
+#include "Exception.h"
+#include "JSCJSValueInlines.h"
+#include "JSCellInlines.h"
+#include "JSInternalPromise.h"
+#include "JSInternalPromiseConstructor.h"
+#include "SlotVisitorInlines.h"
+#include "StructureInlines.h"
+
+namespace JSC {
+
+const ClassInfo JSInternalPromiseDeferred::s_info = { "JSInternalPromiseDeferred", &Base::s_info, nullptr, CREATE_METHOD_TABLE(JSInternalPromiseDeferred) };
+
+JSInternalPromiseDeferred* JSInternalPromiseDeferred::create(ExecState* exec, JSGlobalObject* globalObject)
+{
+    VM& vm = exec->vm();
+
+    JSValue deferred = newPromiseCapability(exec, globalObject, globalObject->internalPromiseConstructor());
+
+    JSValue promise = deferred.get(exec, vm.propertyNames->promisePrivateName);
+    ASSERT(promise.inherits(JSInternalPromise::info()));
+    JSValue resolve = deferred.get(exec, vm.propertyNames->builtinNames().resolvePrivateName());
+    JSValue reject = deferred.get(exec, vm.propertyNames->builtinNames().rejectPrivateName());
+
+    JSInternalPromiseDeferred* result = new (NotNull, allocateCell<JSInternalPromiseDeferred>(vm.heap)) JSInternalPromiseDeferred(vm);
+    result->finishCreation(vm, jsCast<JSObject*>(promise), resolve, reject);
+    return result;
+}
+
+JSInternalPromiseDeferred::JSInternalPromiseDeferred(VM& vm)
+    : Base(vm, vm.internalPromiseDeferredStructure.get())
+{
+}
+
+JSInternalPromise* JSInternalPromiseDeferred::promise() const
+{
+    return jsCast<JSInternalPromise*>(Base::promise());
+}
+
+JSInternalPromise* JSInternalPromiseDeferred::resolve(ExecState* exec, JSValue value)
+{
+    Base::resolve(exec, value);
+    return promise();
+}
+
+JSInternalPromise* JSInternalPromiseDeferred::reject(ExecState* exec, JSValue reason)
+{
+    Base::reject(exec, reason);
+    return promise();
+}
+
+} // namespace JSC