Added arrow key navigation to Overview Mode

ui/views/controls/window_label.h

+// Copyright (c) 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.
+
+#ifndef UI_VIEWS_CONTROLS_WINDOW_LABEL_H_
+#define UI_VIEWS_CONTROLS_WINDOW_LABEL_H_
+
+#include "ui/views/controls/label.h"
+
+namespace views {
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Window Label class
+//
+// A window label is a label subclass that works as a window from the point of
+// view of a11y.
+//
+/////////////////////////////////////////////////////////////////////////////
+class VIEWS_EXPORT WindowLabel : public Label {
+ public:
+  WindowLabel();
+  ~WindowLabel();
+
+  virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_CONTROLS_WINDOW_LABEL_H_