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diff --git a/WebCore/bindings/v8/WorkerContextExecutionProxy.h b/WebCore/bindings/v8/WorkerContextExecutionProxy.h
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+/*
+ * Copyright (C) 2009 Google 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER OR 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.
+ */
+
+
+#ifndef WorkerContextExecutionProxy_h
+#define WorkerContextExecutionProxy_h
+
+#if ENABLE(WORKERS)
+
+#include <v8.h>
+#include "V8Index.h"
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+    class Event;
+    class EventTarget;
+    class V8EventListener;
+    class V8WorkerContextEventListener;
+    class WorkerContext;
+
+    class WorkerContextExecutionProxy {
+    public:
+        WorkerContextExecutionProxy(WorkerContext*);
+        ~WorkerContextExecutionProxy();
+
+        // FIXME: following function sshould have camelCased names once V8 code-generating script is migrated.
+        v8::Local<v8::Context> GetContext() { return v8::Local<v8::Context>::New(m_context); }
+        v8::Local<v8::Function> GetConstructor(V8ClassIndex::V8WrapperType);
+        PassRefPtr<V8EventListener> FindOrCreateEventListener(v8::Local<v8::Value> listener, bool isInline, bool findOnly);
+        void RemoveEventListener(V8EventListener*);
+
+        static v8::Handle<v8::Value> ToV8Object(V8ClassIndex::V8WrapperType type, void* impl);
+        static v8::Handle<v8::Value> EventToV8Object(Event* event);
+        static v8::Handle<v8::Value> EventTargetToV8Object(EventTarget* target);
+        static v8::Handle<v8::Value> WorkerContextToV8Object(WorkerContext* wc);
+
+        // Track the event so that we can detach it from the JS wrapper when a worker
+        // terminates. This is needed because we need to be able to dispose these
+        // events and releases references to their event targets: WorkerContext.
+        void trackEvent(Event*);
+
+        // Evaluate a script file in the current execution environment.
+        v8::Local<v8::Value> evaluate(const String& script, const String& fileName, int baseLine);
+
+        // Returns WorkerContext object.
+        WorkerContext* workerContext() { return m_workerContext; }
+
+        // Returns WorkerContextExecutionProxy object of the currently executing context.
+        static WorkerContextExecutionProxy* retrieve();
+
+        // Enables HTML5 worker support.
+        static bool isWebWorkersEnabled();
+        static void setIsWebWorkersEnabled(bool);
+
+    private:
+        void initContextIfNeeded();
+        void dispose();
+
+        // Run an already compiled script.
+        v8::Local<v8::Value> runScript(v8::Handle<v8::Script>);
+
+        static v8::Local<v8::Object> toV8(V8ClassIndex::V8WrapperType descType, V8ClassIndex::V8WrapperType cptrType, void* impl);
+
+        static bool forgetV8EventObject(Event*);
+
+        WorkerContext* m_workerContext;
+        v8::Persistent<v8::Context> m_context;
+        int m_recursion;
+
+        Vector<V8WorkerContextEventListener*> m_listeners;
+        Vector<Event*> m_events;
+    };
+
+} // namespace WebCore
+
+#endif // ENABLE(WORKERS)
+
+#endif // WorkerContextExecutionProxy_h