ash: Change auto to not deduce raw pointers.

ash/display/display_util.cc

 // Copyright 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.
 
 #include "ash/display/display_util.h"
 
 #include <algorithm>
 
 #include "ash/common/display/display_info.h"
 #include "ash/common/system/system_notifier.h"
@@ skipping 447 matching lines @@
                       system_notifier::kNotifierDisplayError),
           message_center::RichNotificationData(),
           new DisplayErrorNotificationDelegate));
   message_center::MessageCenter::Get()->AddNotification(
       std::move(notification));
 }
 
 base::string16 GetDisplayErrorNotificationMessageForTest() {
   message_center::NotificationList::Notifications notifications =
       message_center::MessageCenter::Get()->GetVisibleNotifications();
-  for (auto const notification : notifications) {
+  for (auto* const notification : notifications) {
     if (notification->id() == kDisplayErrorNotificationId)
       return notification->message();
   }
   return base::string16();
 }
 
 }  // namespace ash