Add accessible names to buttons in the Uber tray

ash/system/tray/tray_views.h

 // 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_TRAY_TRAY_VIEWS_H_
 #define ASH_SYSTEM_TRAY_TRAY_VIEWS_H_
 
 #include "ash/ash_export.h"
 #include "ash/wm/shelf_types.h"
 #include "ui/gfx/font.h"
@@ skipping 200 matching lines @@
 };
 
 // A ToggleImageButton with fixed size, paddings and hover effects. These
 // buttons are used in the header.
 class TrayPopupHeaderButton : public views::ToggleImageButton {
  public:
   TrayPopupHeaderButton(views::ButtonListener* listener,
                         int enabled_resource_id,
                         int disabled_resource_id,
                         int enabled_resource_id_hover,
-                        int disabled_resource_id_hover);
+                        int disabled_resource_id_hover,
+                        int accessible_name_id);
   virtual ~TrayPopupHeaderButton();
 
  private:
   // Overridden from views::View.
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void OnPaintBorder(gfx::Canvas* canvas) OVERRIDE;
   virtual void OnPaintFocusBorder(gfx::Canvas* canvas) OVERRIDE;
 
   // Overridden from views::CustomButton.
   virtual void StateChanged() OVERRIDE;
@@ skipping 62 matching lines @@
 void SetTrayImageItemBorder(views::View* tray_view, ShelfAlignment alignment);
 // Sets the empty border around a label tray item for adjusting the space
 // around it.
 void SetTrayLabelItemBorder(TrayItemView* tray_view,
                             ShelfAlignment alignment);
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_VIEWS_H_