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diff --git a/chrome/browser/automation/automation_browser_tracker.h b/chrome/browser/automation/automation_browser_tracker.h
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+++ b/chrome/browser/automation/automation_browser_tracker.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 CHROME_BROWSER_AUTOMATION_AUTOMATION_BROWSER_TRACKER_H__
+#define CHROME_BROWSER_AUTOMATION_AUTOMATION_BROWSER_TRACKER_H__
+
+#include "chrome/browser/automation/automation_resource_tracker.h"
+#include "chrome/browser/browser.h"
+#include "chrome/common/notification_source.h"
+
+// Tracks Browser objects.
+class AutomationBrowserTracker : public AutomationResourceTracker<Browser*> {
+ public:
+  explicit AutomationBrowserTracker(IPC::Message::Sender* automation)
+      : AutomationResourceTracker<Browser*>(automation) { }
+
+  virtual ~AutomationBrowserTracker() {
+  }
+
+  virtual void AddObserver(Browser* resource) {
+    registrar_.Add(this, NotificationType::BROWSER_CLOSED,
+                   Source<Browser>(resource));
+  }
+
+  virtual void RemoveObserver(Browser* resource) {
+    registrar_.Remove(this, NotificationType::BROWSER_CLOSED,
+                      Source<Browser>(resource));
+  }
+};
+
+#endif  // CHROME_BROWSER_AUTOMATION_AUTOMATION_BROWSER_TRACKER_H__