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diff --git a/chrome/worker/nativewebworker_impl.h b/chrome/worker/nativewebworker_impl.h
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+++ b/chrome/worker/nativewebworker_impl.h
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+// Copyright (c) 2009 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 CHROME_WORKER_NATIVEWORKER_H_
+#define CHROME_WORKER_NATIVEWORKER_H_
+
+#include "base/basictypes.h"
+#include "webkit/api/public/WebWorker.h"
+#include "webkit/api/public/WebWorkerClient.h"
+
+
+// Forward declaration for the listener thread pointer.
+class NativeWebWorkerListenerThread;
+
+// This class is used by the worker process code to talk to the Native Client
+// worker implementation.
+class NativeWebWorkerImpl : public WebKit::WebWorker {
+ public:
+  explicit NativeWebWorkerImpl(WebKit::WebWorkerClient* client);
+  virtual ~NativeWebWorkerImpl();
+
+  static WebWorker* NativeWebWorkerImpl::create(
+            WebKit::WebWorkerClient* client);
+
+  // WebWorker implementation.
+  void startWorkerContext(const WebKit::WebURL& script_url,
+                          const WebKit::WebString& user_agent,
+                          const WebKit::WebString& source_code);
+  void terminateWorkerContext();
+  void postMessageToWorkerContext(const WebKit::WebString& message);
+  void workerObjectDestroyed();
+
+ private:
+  WebKit::WebWorkerClient* client_;
+  struct NaClApp* nap_;
+  struct NaClSrpcChannel* channel_;
+  NativeWebWorkerListenerThread* upcall_thread_;
+  struct NaClDesc* descs_[2];
+
+  DISALLOW_COPY_AND_ASSIGN(NativeWebWorkerImpl);
+};
+
+#endif  // CHROME_WORKER_NATIVEWEBWORKER_H_