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diff --git a/chrome/browser/browser_process_sub_thread.h b/chrome/browser/browser_process_sub_thread.h
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+++ b/chrome/browser/browser_process_sub_thread.h
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+// Copyright (c) 2010 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_BROWSER_BROWSER_PROCESS_SUB_THREAD_H_
+#define CHROME_BROWSER_BROWSER_PROCESS_SUB_THREAD_H_
+
+#include "base/basictypes.h"
+#include "chrome/browser/chrome_thread.h"
+
+class NotificationService;
+
+// ----------------------------------------------------------------------------
+// BrowserProcessSubThread
+//
+// This simple thread object is used for the specialized threads that the
+// BrowserProcess spins up.
+//
+// Applications must initialize the COM library before they can call
+// COM library functions other than CoGetMalloc and memory allocation
+// functions, so this class initializes COM for those users.
+class BrowserProcessSubThread : public ChromeThread {
+ public:
+  explicit BrowserProcessSubThread(ChromeThread::ID identifier);
+  virtual ~BrowserProcessSubThread();
+
+ protected:
+  virtual void Init();
+  virtual void CleanUp();
+
+ private:
+  // Each specialized thread has its own notification service.
+  // Note: We don't use scoped_ptr because the destructor runs on the wrong
+  // thread.
+  NotificationService* notification_service_;
+
+  DISALLOW_COPY_AND_ASSIGN(BrowserProcessSubThread);
+};
+
+#endif // CHROME_BROWSER_BROWSER_PROCESS_SUB_THREAD_H_