Make PrefService available in *ash

chrome/browser/ui/ash/chrome_shell_delegate.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/ui/ash/chrome_shell_delegate.h"
 
 #include <stddef.h>
 
 #include <limits>
 
@@ skipping 540 matching lines @@
                                 ui::PAGE_TRANSITION_AUTO_BOOKMARK);
   params.disposition = WindowOpenDisposition::SINGLETON_TAB;
   chrome::Navigate(&params);
 }
 
 gfx::Image ChromeShellDelegate::GetDeprecatedAcceleratorImage() const {
   return ui::ResourceBundle::GetSharedInstance().GetImageNamed(
       IDR_BLUETOOTH_KEYBOARD);
 }
 
+PrefService* ChromeShellDelegate::GetActiveUserPrefService() const {
+  const user_manager::User* const user =
+      user_manager::UserManager::Get()->GetActiveUser();
+  return user ? chromeos::ProfileHelper::Get()
+                    ->GetProfileByUser(user)
+                    ->GetPrefs()
+              : nullptr;
+}
+
 bool ChromeShellDelegate::IsTouchscreenEnabledInPrefs(
     bool use_local_state) const {
   return chromeos::system::InputDeviceSettings::Get()
       ->IsTouchscreenEnabledInPrefs(use_local_state);
 }
 
 void ChromeShellDelegate::SetTouchscreenEnabledInPrefs(bool enabled,
                                                        bool use_local_state) {
   chromeos::system::InputDeviceSettings::Get()->SetTouchscreenEnabledInPrefs(
       enabled, use_local_state);
@@ skipping 63 matching lines @@
       NOTREACHED() << "Unexpected notification " << type;
   }
 }
 
 void ChromeShellDelegate::PlatformInit() {
   registrar_.Add(this, chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
                  content::NotificationService::AllSources());
   registrar_.Add(this, chrome::NOTIFICATION_SESSION_STARTED,
                  content::NotificationService::AllSources());
 }