Rename touchpad_settings.* to input_device_settings.*

chrome/browser/chromeos/system/touchpad_settings.h

-// Copyright (c) 2011 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_SYSTEM_TOUCHPAD_SETTINGS_H_
-#define CHROME_BROWSER_CHROMEOS_SYSTEM_TOUCHPAD_SETTINGS_H_
-#pragma once
-
-namespace chromeos {
-namespace system {
-namespace touchpad_settings {
-
-bool TouchpadExists();
-
-// Sets the touchpad sensitivity in range from 1 to 5.
-void SetSensitivity(int value);
-
-// Turns tap to click on / off.
-void SetTapToClick(bool enabled);
-
-}  // namespace touchpad_settings
-
-namespace mouse_settings {
-
-void SetPrimaryButtonRight(bool right);
-
-}  // namespace mouse_settings
-
-}  // namespace system
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_SYSTEM_TOUCHPAD_SETTINGS_H_