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diff --git a/Source/JavaScriptCore/runtime/JSJob.cpp b/Source/JavaScriptCore/runtime/JSJob.cpp
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+++ b/Source/JavaScriptCore/runtime/JSJob.cpp
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+/*
+ * Copyright (C) 2013 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 "JSJob.h"
+
+#include "Error.h"
+#include "Exception.h"
+#include "JSCJSValueInlines.h"
+#include "JSCellInlines.h"
+#include "JSGlobalObject.h"
+#include "Microtask.h"
+#include "SlotVisitorInlines.h"
+#include "StrongInlines.h"
+
+namespace JSC {
+
+class JSJobMicrotask final : public Microtask {
+public:
+    JSJobMicrotask(VM& vm, JSValue job, JSArray* arguments)
+    {
+        m_job.set(vm, job);
+        m_arguments.set(vm, arguments);
+    }
+
+    virtual ~JSJobMicrotask()
+    {
+    }
+
+private:
+    virtual void run(ExecState*) override;
+
+    Strong<Unknown> m_job;
+    Strong<JSArray> m_arguments;
+};
+
+Ref<Microtask> createJSJob(VM& vm, JSValue job, JSArray* arguments)
+{
+    return adoptRef(*new JSJobMicrotask(vm, job, arguments));
+}
+
+void JSJobMicrotask::run(ExecState* exec)
+{
+    CallData handlerCallData;
+    CallType handlerCallType = getCallData(m_job.get(), handlerCallData);
+    ASSERT(handlerCallType != CallTypeNone);
+
+    MarkedArgumentBuffer handlerArguments;
+    for (unsigned index = 0, length = m_arguments->length(); index < length; ++index)
+        handlerArguments.append(m_arguments->JSArray::get(exec, index));
+    profiledCall(exec, ProfilingReason::Microtask, m_job.get(), handlerCallType, handlerCallData, jsUndefined(), handlerArguments);
+}
+
+} // namespace JSC