arc: Make ChromeVox read an ARC custom notification

ui/arc/notification/arc_custom_notification_item.cc

 // Copyright 2016 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 "ui/arc/notification/arc_custom_notification_item.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/arc/bitmap/bitmap_type_converters.h"
@@ skipping 47 matching lines @@
   DCHECK(CalledOnValidThread());
   DCHECK_EQ(notification_key(), data.key);
 
   if (CacheArcNotificationData(data))
     return;
 
   message_center::RichNotificationData rich_data;
   rich_data.pinned = (data.no_clear || data.ongoing_event);
   rich_data.priority = ConvertAndroidPriority(data.priority);
   rich_data.small_image = ConvertAndroidSmallIcon(data.small_icon);
+  if (!data.accessible_name.is_null())
+    rich_data.accessible_name = base::UTF8ToUTF16(data.accessible_name.get());
 
   message_center::NotifierId notifier_id(
       message_center::NotifierId::SYSTEM_COMPONENT, kNotifierId);
   notifier_id.profile_id = profile_id().GetUserEmail();
 
   DCHECK(!data.title.is_null());
   DCHECK(!data.message.is_null());
   SetNotification(base::MakeUnique<message_center::Notification>(
       message_center::NOTIFICATION_TYPE_CUSTOM, notification_id(),
       base::UTF8ToUTF16(data.title.get()),
@@ skipping 38 matching lines @@
 }
 
 void ArcCustomNotificationItem::DecrementWindowRefCount() {
   DCHECK_GT(window_ref_count_, 0);
   --window_ref_count_;
   if (window_ref_count_ == 0)
     manager()->CloseNotificationWindow(notification_key());
 }
 
 }  // namespace arc