Move yet more from WmShell to Shell

ash/common/wm/overview/window_selector_controller.cc

Index: ash/common/wm/overview/window_selector_controller.cc
diff --git a/ash/common/wm/overview/window_selector_controller.cc b/ash/common/wm/overview/window_selector_controller.cc
index fa00733c6e5c5c9266bf51d0ce9b8ff8b4167117..6769442fe44a379ea64efa1d0d45bbd6ce2a3476 100644
--- a/ash/common/wm/overview/window_selector_controller.cc
+++ b/ash/common/wm/overview/window_selector_controller.cc
@@ -33,10 +33,10 @@ WindowSelectorController::~WindowSelectorController() {
 bool WindowSelectorController::CanSelect() {
   // Don't allow a window overview if the screen is locked or a modal dialog is
   // open or running in kiosk app session.
-  WmShell* wm_shell = WmShell::Get();
-  SessionController* session_controller = wm_shell->session_controller();
+  SessionController* session_controller = Shell::Get()->session_controller();
   SystemTrayDelegate* system_tray_delegate =
       Shell::Get()->system_tray_delegate();
+  WmShell* wm_shell = WmShell::Get();
   return session_controller->IsActiveUserSessionStarted() &&
          !session_controller->IsScreenLocked() &&
          !wm_shell->IsSystemModalWindowOpen() && !wm_shell->IsPinned() &&