Add tray warning for Locally managed users.

ash/system/chromeos/label_tray_view.h

Index: ash/system/chromeos/label_tray_view.h
diff --git a/ash/system/chromeos/label_tray_view.h b/ash/system/chromeos/label_tray_view.h
new file mode 100644
index 0000000000000000000000000000000000000000..402f5c3746627dd4300d0d565ec3f1c1b0628da6
--- /dev/null
+++ b/ash/system/chromeos/label_tray_view.h
@@ -0,0 +1,37 @@
+// Copyright (c) 2012 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.
+
+#ifndef ASH_SYSTEM_CHROMEOS_LABEL_TRAY_VIEW_H_
+#define ASH_SYSTEM_CHROMEOS_LABEL_TRAY_VIEW_H_
+
+#include "base/string16.h"
+#include "ui/views/view.h"
+
+namespace ash {
+namespace internal {
+
+class ViewClickListener;
+
+// View for simple information in tray. Automatically hides when message is
+// empty. Supports multiline messages.
+
+class LabelTrayView : public views::View {
+ public:
+  LabelTrayView(ViewClickListener* click_listener, int icon_resource_id);
+  virtual ~LabelTrayView();
+  void SetMessage(const base::string16& message);
+ private:
+  views::View* CreateChildView(const base::string16& message) const;
+
+  ViewClickListener* click_listener_;
+  int icon_resource_id_;
+  base::string16 message_;
+
+  DISALLOW_COPY_AND_ASSIGN(LabelTrayView);
+};
+
+}  // namespace internal
+}  // namespace ash
+
+#endif  // ASH_SYSTEM_CHROMEOS_LABEL_TRAY_VIEW_H_