Add an accessible name to the restart button

ash/system/tray_update.cc

 // 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.
 
 #include "ash/system/tray_update.h"
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_views.h"
@@ skipping 18 matching lines @@
 
     ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
     views::ImageView* image =
         new ash::internal::FixedSizedImageView(0, ash::kTrayPopupItemHeight);
     image->SetImage(bundle.GetImageNamed(IDR_AURA_UBER_TRAY_UPDATE_DARK).
         ToSkBitmap());
 
     AddChildView(image);
     AddChildView(new views::Label(
         bundle.GetLocalizedString(IDS_ASH_STATUS_TRAY_UPDATE)));
+    SetAccessibleName(bundle.GetLocalizedString(IDS_ASH_STATUS_TRAY_UPDATE));
   }
 
   virtual ~UpdateView() {}
 
  private:
   // Overridden from ActionableView.
   virtual bool PerformAction(const views::Event& event) OVERRIDE {
     ash::Shell::GetInstance()->tray_delegate()->RequestRestart();
     return true;
   }
@@ skipping 26 matching lines @@
 void TrayUpdate::DestroyDefaultView() {
   default_.reset();
 }
 
 void TrayUpdate::OnUpdateRecommended() {
   image_view()->SetVisible(true);
 }
 
 }  // namespace internal
 }  // namespace ash