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diff --git a/V8Binding/v8/V8NPUtils.h b/V8Binding/v8/V8NPUtils.h
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+++ b/V8Binding/v8/V8NPUtils.h
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+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef v8_np_utils_h
+#define v8_np_utils_h
+
+#include <v8.h>
+#include "third_party/npapi/bindings/npruntime.h"
+
+namespace WebCore {
+    class Frame;
+}
+
+// Convert a V8 Value of any type (string, bool, object, etc) to a NPVariant.
+void convertV8ObjectToNPVariant(v8::Local<v8::Value> object, NPObject *owner, NPVariant* result);
+
+// Convert a NPVariant (string, bool, object, etc) back to a V8 Value.
+// The owner object is the NPObject which relates to the object, if the object
+// is an Object.  The created NPObject will be tied to the lifetime of the
+// owner.
+v8::Handle<v8::Value> convertNPVariantToV8Object(const NPVariant* value, NPObject* owner);
+
+// Helper function to create an NPN String Identifier from a v8 string.
+NPIdentifier getStringIdentifier(v8::Handle<v8::String> str);
+
+#endif // v8_np_utils_h