Add ARC++ kiosk menu items and ability to start kiosk session.

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 76ef5d0bfbb4a9fdd68b3e51c49cb84cee28d5ce..f0a80d263baaa823cbd355e94fa8ac590f694f19 100644
--- a/ash/common/wm/overview/window_selector_controller.cc
+++ b/ash/common/wm/overview/window_selector_controller.cc
@@ -32,14 +32,16 @@ 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();
   SessionStateDelegate* session_state_delegate =
-      WmShell::Get()->GetSessionStateDelegate();
+      wm_shell->GetSessionStateDelegate();
+  SystemTrayDelegate* system_tray_delegate = wm_shell->system_tray_delegate();
   return session_state_delegate->IsActiveUserSessionStarted() &&
          !session_state_delegate->IsScreenLocked() &&
-         !WmShell::Get()->IsSystemModalWindowOpen() &&
-         !WmShell::Get()->IsPinned() &&
-         WmShell::Get()->system_tray_delegate()->GetUserLoginStatus() !=
-             LoginStatus::KIOSK_APP;
+         !wm_shell->IsSystemModalWindowOpen() && !wm_shell->IsPinned() &&
+         system_tray_delegate->GetUserLoginStatus() != LoginStatus::KIOSK_APP &&
+         system_tray_delegate->GetUserLoginStatus() !=
+             LoginStatus::ARC_KIOSK_APP;
 }
 
 bool WindowSelectorController::ToggleOverview() {