Tray elements behave appropriately on the multiple signin screen (more like lock screen)

ash/session/session_state_delegate.cc

Index: ash/session/session_state_delegate.cc
diff --git a/ash/session/session_state_delegate.cc b/ash/session/session_state_delegate.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e55a5adf55e794ed87f55150b4704d43b1e40887
--- /dev/null
+++ b/ash/session/session_state_delegate.cc
@@ -0,0 +1,14 @@
+// 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 "ash/session/session_state_delegate.h"
+
+namespace ash {
+
+bool SessionStateDelegate::IsInSecondaryLoginScreen() const {
+  return GetSessionState() ==
+      ash::SessionStateDelegate::SESSION_STATE_LOGIN_SECONDARY;
+}
+
+} // namespace ash