Moves app_list() and related functions from Shell to WmShell

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

Index: chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc
diff --git a/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc b/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc
index 525587b34d62b294970e998e57ac3a5e64157354..ca9a7fac860821ba9cbeef755e3198d0c9d56ec2 100644
--- a/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc
+++ b/chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.cc
@@ -115,7 +115,7 @@ UserSwitchAnimatorChromeOS::UserSwitchAnimatorChromeOS(
       animation_step_(ANIMATION_STEP_HIDE_OLD_USER),
       screen_cover_(GetScreenCover(NULL)),
       windows_by_account_id_() {
-  ash::WmShell::Get()->DismissAppList();
+  ash::Shell::Get()->DismissAppList();
   BuildUserToWindowsListMap();
   AdvanceUserTransitionAnimation();