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diff --git a/webkit/plugins/ppapi/v8_var_converter.h b/webkit/plugins/ppapi/v8_var_converter.h
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+++ b/webkit/plugins/ppapi/v8_var_converter.h
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+// Copyright (c) 2013 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 WEBKIT_PLUGINS_PPAPI_V8_VAR_CONVERTER_H
+#define WEBKIT_PLUGINS_PPAPI_V8_VAR_CONVERTER_H
+
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "ppapi/c/pp_var.h"
+#include "v8/include/v8.h"
+#include "webkit/plugins/webkit_plugins_export.h"
+
+namespace webkit {
+namespace ppapi {
+
+// Class to convert between PP_Vars and V8 values.
+class WEBKIT_PLUGINS_EXPORT V8VarConverter {
+ public:
+  V8VarConverter();
+
+  // Converts the given PP_Var to a v8::Value. True is returned upon success.
+  bool ToV8Value(const PP_Var& var,
+                 v8::Handle<v8::Context> context,
+                 v8::Handle<v8::Value>* result) const;
+  // Converts the given v8::Value to a PP_Var. True is returned upon success.
+  // Every PP_Var in the reference graph of which |result| is apart will have
+  // a refcount equal to the number of references to it in the graph. |result|
+  // will have one additional reference.
+  bool FromV8Value(v8::Handle<v8::Value> val,
+                   v8::Handle<v8::Context> context,
+                   PP_Var* result) const;
+
+  DISALLOW_COPY_AND_ASSIGN(V8VarConverter);
+};
+
+}  // namespace ppapi
+}  // namespace webkit
+
+#endif  // WEBKIT_PLUGINS_PPAPI_V8_VAR_CONVERTER_H