mash: Migrate SessionStateDelegate access to WmShell.

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.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/webui/chromeos/login/signin_screen_handler.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <vector>
 
 #include "ash/common/system/chromeos/devicetype_utils.h"
+#include "ash/common/wm_shell.h"
 #include "ash/shell.h"
 #include "ash/wm/lock_state_controller.h"
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/metrics/histogram.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 1269 matching lines @@
   proximity_auth::ScreenlockBridge::Get()->SetFocusedUser(account_id);
   if (delegate_)
     delegate_->CheckUserStatus(account_id);
   if (!test_focus_pod_callback_.is_null())
     test_focus_pod_callback_.Run();
 
   const user_manager::User* user =
       user_manager::UserManager::Get()->FindUser(account_id);
   // |user| may be nullptr in kiosk mode or unit tests.
   if (user && user->is_logged_in() && !user->is_active()) {
-    ash::Shell::GetInstance()->session_state_delegate()->SwitchActiveUser(
+    ash::WmShell::Get()->GetSessionStateDelegate()->SwitchActiveUser(
         account_id);
   } else {
     SetUserInputMethod(account_id.GetUserEmail(), ime_state_.get());
     WallpaperManager::Get()->SetUserWallpaperDelayed(account_id);
 
     bool use_24hour_clock = false;
     if (user_manager::known_user::GetBooleanPref(
             account_id, prefs::kUse24HourClock, &use_24hour_clock)) {
       g_browser_process->platform_part()
           ->GetSystemClock()
@@ skipping 155 matching lines @@
 }
 
 void SigninScreenHandler::OnFeedbackFinished() {
   CallJS("login.UnrecoverableCryptohomeErrorScreen.resumeAfterFeedbackUI");
 
   // Recreate user's cryptohome after the feedback is attempted.
   HandleResyncUserData();
 }
 
 }  // namespace chromeos