Add ash SessionStateDelegate

ash/desktop_background/desktop_background_view.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 "ash/desktop_background/desktop_background_view.h"
 
 #include <limits>
 
 #include "ash/ash_export.h"
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/desktop_background/desktop_background_widget_controller.h"
 #include "ash/desktop_background/user_wallpaper_delegate.h"
 #include "ash/root_window_controller.h"
+#include "ash/session_state_delegate.h"
 #include "ash/shell.h"
-#include "ash/shell_delegate.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/property_util.h"
 #include "ash/wm/window_animations.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "ui/aura/root_window.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animation_observer.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
@@ skipping 168 matching lines @@
   views::corewm::SetWindowVisibilityAnimationType(
       desktop_widget->GetNativeView(), animation_type);
 
   // Enable wallpaper transition for the following cases:
   // 1. Initial(OOBE) wallpaper animation.
   // 2. Wallpaper fades in from a non empty background.
   // 3. From an empty background, chrome transit to a logged in user session.
   // 4. From an empty background, guest user logged in.
   if (wallpaper_delegate->ShouldShowInitialAnimation() ||
       root_window->GetProperty(kAnimatingDesktopController) ||
-      Shell::GetInstance()->delegate()->IsGuestSession() ||
-      Shell::GetInstance()->delegate()->IsUserLoggedIn()) {
+      Shell::GetInstance()->session_state_delegate()->HasActiveUser()) {
     views::corewm::SetWindowVisibilityAnimationTransition(
         desktop_widget->GetNativeView(), views::corewm::ANIMATE_SHOW);
   } else {
     // Disable animation if transition to login screen from an empty background.
     views::corewm::SetWindowVisibilityAnimationTransition(
         desktop_widget->GetNativeView(), views::corewm::ANIMATE_NONE);
   }
 
   desktop_widget->SetBounds(params.parent->bounds());
   ui::ScopedLayerAnimationSettings settings(
       desktop_widget->GetNativeView()->layer()->GetAnimator());
   settings.SetPreemptionStrategy(ui::LayerAnimator::ENQUEUE_NEW_ANIMATION);
   settings.AddObserver(new ShowWallpaperAnimationObserver(
       root_window, desktop_widget,
       wallpaper_delegate->ShouldShowInitialAnimation()));
   desktop_widget->Show();
   desktop_widget->GetNativeView()->SetName("DesktopBackgroundView");
   return desktop_widget;
 }
 
 }  // namespace internal
 }  // namespace ash