ash: Use SessionController instead of SessionStateDelegate

ash/test/ash_test_helper.cc

 // Copyright 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 "ash/test/ash_test_helper.h"
 
 #include "ash/accelerators/accelerator_controller_delegate_aura.h"
 #include "ash/aura/wm_shell_aura.h"
 #include "ash/common/test/test_session_state_delegate.h"
 #include "ash/common/test/test_system_tray_delegate.h"
@@ skipping 124 matching lines @@
   ui::MaterialDesignController::Initialize();
 
   if (is_mash)
     CreateMashWindowManager();
   else
     CreateShell();
 
   aura::test::EnvTestHelper().SetInputStateLookup(
       std::unique_ptr<aura::InputStateLookup>());
 
+  session_controller_client_.reset(
+      new TestSessionControllerClient(WmShell::Get()->session_controller()));
+  session_controller_client_->InitializeAndBind();
+
   Shell* shell = Shell::GetInstance();
-  if (start_session) {
-    GetTestSessionStateDelegate()->SetActiveUserSessionStarted(true);
-    GetTestSessionStateDelegate()->SetHasActiveUser(true);
-  }
+  if (start_session)
+    session_controller_client_->CreatePredefinedUserSessions(1);
 
   if (!is_mash) {
     // ScreenLayoutObserver is specific to classic-ash.
     // Tests that change the display configuration generally don't care about
     // the notifications and the popup UI can interfere with things like
     // cursors.
     shell->screen_layout_observer()->set_show_notifications_for_testing(false);
 
     // DisplayManager is specific to classic-ash.
     display::test::DisplayManagerTestApi(
@@ skipping 209 matching lines @@
   std::set<RootWindowController*> roots =
       window_manager_app_->window_manager()->GetRootWindowControllers();
   std::vector<RootWindowController*> ordered_roots;
   ordered_roots.insert(ordered_roots.begin(), roots.begin(), roots.end());
   std::sort(ordered_roots.begin(), ordered_roots.end(), &CompareByDisplayId);
   return ordered_roots;
 }
 
 }  // namespace test
 }  // namespace ash