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diff --git a/chrome/browser/chromeos/touchpad.h b/chrome/browser/chromeos/touchpad.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_CHROMEOS_TOUCHPAD_H_
+#define CHROME_BROWSER_CHROMEOS_TOUCHPAD_H_
+
+#include <string>
+
+#include "chrome/common/notification_observer.h"
+#include "chrome/common/pref_member.h"
+
+class PrefService;
+
+// The Touchpad class handles touchpad preferences. When the class is first
+// initialized, it will initialize the touchpad settings to what's stored in the
+// preferences. And whenever the preference changes, we change the touchpad
+// setting to reflect the new value.
+//
+// For Synaptics touchpads, we use synclient to change settings on-the-fly.
+// See "man synaptics" for a list of settings that can be changed
+// Since we are doing a system call to run the synclient binary, we make sure
+// that we are running on the IO thread so that we don't block the UI thread.
+class Touchpad : public NotificationObserver {
+ public:
+  explicit Touchpad() {}
+  virtual ~Touchpad() {}
+
+  // This method will register the prefs associated with touchpad settings.
+  static void RegisterUserPrefs(PrefService* prefs);
+
+  // This method will initialize touchpad settings to values in user prefs.
+  virtual void Init(PrefService* prefs);
+
+  // Overridden from NotificationObserver:
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+ protected:
+  virtual void NotifyPrefChanged(const std::wstring* pref_name);
+
+ private:
+  // This methods makes a system call to synclient to change touchpad settings.
+  // The system call will be invoked on the file thread.
+  void SetSynclientParam(const std::string& param, const std::string& value);
+
+  void SetTapToClick();
+  void SetVertEdgeScroll();
+
+  BooleanPrefMember tap_to_click_enabled_;
+  BooleanPrefMember vert_edge_scroll_enabled_;
+
+  DISALLOW_COPY_AND_ASSIGN(Touchpad);
+};
+
+#endif  // CHROME_BROWSER_CHROMEOS_TOUCHPAD_H_