ash: Use enum for SessionController::CycleActiveUser

chrome/browser/ui/ash/session_state_delegate_chromeos.cc

 // Copyright (c) 2013 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/session_state_delegate_chromeos.h"
 
 #include "ash/common/session/session_state_observer.h"
 #include "ash/common/wm_window.h"
 #include "ash/content/shell_content_state.h"
 #include "base/bind.h"
@@ skipping 125 matching lines @@
       ash::ShellContentState::GetInstance()->GetBrowserContextForWindow(
           ash::WmWindow::GetAuraWindow(window));
   return GetAvatarImageForContext(context);
 }
 
 void SessionStateDelegateChromeos::SwitchActiveUser(
     const AccountId& account_id) {
   SessionControllerClient::DoSwitchActiveUser(account_id);
 }
 
-void SessionStateDelegateChromeos::CycleActiveUser(CycleUser cycle_user) {
-  SessionControllerClient::DoCycleActiveUser(cycle_user == CYCLE_TO_NEXT_USER);
+void SessionStateDelegateChromeos::CycleActiveUser(
+    ash::CycleUserDirection direction) {
+  SessionControllerClient::DoCycleActiveUser(direction);
 }
 
 bool SessionStateDelegateChromeos::IsMultiProfileAllowedByPrimaryUserPolicy()
     const {
   return chromeos::MultiProfileUserController::GetPrimaryUserPolicy() ==
          chromeos::MultiProfileUserController::ALLOWED;
 }
 
 void SessionStateDelegateChromeos::AddSessionStateObserver(
     ash::SessionStateObserver* observer) {
@@ skipping 39 matching lines @@
     return;
 
   session_state_ = new_state;
   NotifySessionStateChanged();
 }
 
 void SessionStateDelegateChromeos::NotifySessionStateChanged() {
   for (ash::SessionStateObserver& observer : session_state_observer_list_)
     observer.SessionStateChanged(session_state_);
 }