chromeos: Promotes more from WmShell to Shell

chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc

 // Copyright 2014 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/multi_user/user_switch_animator_chromeos.h"
 
 #include "ash/common/shelf/shelf_layout_manager.h"
 #include "ash/common/shelf/shelf_widget.h"
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/wallpaper/wallpaper_delegate.h"
@@ skipping 173 matching lines @@
 void UserSwitchAnimatorChromeOS::FinalizeAnimation() {
   user_changed_animation_timer_.reset();
   while (ANIMATION_STEP_ENDED != animation_step_)
     AdvanceUserTransitionAnimation();
 }
 
 void UserSwitchAnimatorChromeOS::TransitionWallpaper(
     AnimationStep animation_step) {
   // Handle the wallpaper switch.
   ash::WallpaperDelegate* wallpaper_delegate =
-      ash::WmShell::Get()->wallpaper_delegate();
+      ash::Shell::Get()->wallpaper_delegate();
   if (animation_step == ANIMATION_STEP_HIDE_OLD_USER) {
     // Set the wallpaper cross dissolve animation duration to our complete
     // animation cycle for a fade in and fade out.
     int duration =
         NO_USER_COVERS_SCREEN == screen_cover_ ? (2 * animation_speed_ms_) : 0;
     wallpaper_delegate->SetAnimationDurationOverride(
         std::max(duration, kMinimalAnimationTimeMS));
     if (screen_cover_ != NEW_USER_COVERS_SCREEN) {
       chromeos::WallpaperManager::Get()->SetUserWallpaperNow(new_account_id_);
       wallpaper_user_id_for_test_ =
@@ skipping 230 matching lines @@
         if (itr != window_to_entry_map.end()) {
           windows_by_account_id_[itr->second->show_for_user()].push_back(
               child_window);
         }
       }
     }
   }
 }
 
 }  // namespace chrome