Use helper DeviceChangeHandler to call mousecontrol/tpcontrol whenever a device is attached.

chrome/browser/chromeos/login/login_display_host_impl.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/chromeos/login/login_display_host_impl.h"
 
 #include <vector>
 
 #include "ash/ash_switches.h"
 #include "ash/desktop_background/desktop_background_controller.h"
@@ skipping 25 matching lines @@
 #include "chrome/browser/chromeos/login/login_wizard.h"
 #include "chrome/browser/chromeos/login/oobe_display.h"
 #include "chrome/browser/chromeos/login/startup_utils.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/login/webui_login_display.h"
 #include "chrome/browser/chromeos/login/webui_login_view.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
 #include "chrome/browser/chromeos/mobile_config.h"
 #include "chrome/browser/chromeos/policy/auto_enrollment_client.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
-#include "chrome/browser/chromeos/system/input_device_settings.h"
 #include "chrome/browser/chromeos/system/statistics_provider.h"
 #include "chrome/browser/chromeos/system/timezone_settings.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/managed_mode/managed_mode.h"
 #include "chrome/browser/policy/browser_policy_connector.h"
 #include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/pref_names.h"
 #include "chromeos/chromeos_constants.h"
@@ skipping 746 matching lines @@
     // If the preferred keyboard for the login screen has been saved, use it.
     PrefService* prefs = g_browser_process->local_state();
     std::string initial_input_method_id =
         prefs->GetString(chromeos::language_prefs::kPreferredKeyboardLayout);
     if (initial_input_method_id.empty()) {
       // If kPreferredKeyboardLayout is not specified, use the hardware layout.
       initial_input_method_id =
           manager->GetInputMethodUtil()->GetHardwareInputMethodId();
     }
     manager->EnableLayouts(locale, initial_input_method_id);
-
-    // Apply owner preferences for tap-to-click and mouse buttons swap for
-    // login screen.
-    system::mouse_settings::SetPrimaryButtonRight(
-        prefs->GetBoolean(prefs::kOwnerPrimaryMouseButtonRight));
-    system::touchpad_settings::SetTapToClick(
-        prefs->GetBoolean(prefs::kOwnerTapToClickEnabled));
   }
 
   ui::SetNaturalScroll(CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kNaturalScrollDefault));
 
   gfx::Rect screen_bounds(chromeos::CalculateScreenBounds(size));
 
   // Check whether we need to execute OOBE process.
   bool oobe_complete = chromeos::StartupUtils::IsOobeCompleted();
   if (!oobe_complete) {
@@ skipping 89 matching lines @@
   VLOG(1) << "Initial time zone: " << timezone_name;
   // Apply locale customizations only once to preserve whatever locale
   // user has changed to during OOBE.
   if (!timezone_name.empty()) {
     chromeos::system::TimezoneSettings::GetInstance()->SetTimezoneFromID(
         UTF8ToUTF16(timezone_name));
   }
 }
 
 }  // namespace chromeos