Fix auto raw pointer deduction on linux

ui/message_center/notification_list.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 "ui/message_center/notification_list.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "ui/gfx/image/image.h"
 #include "ui/message_center/message_center.h"
 #include "ui/message_center/message_center_style.h"
 #include "ui/message_center/notification.h"
 #include "ui/message_center/notification_blocker.h"
 #include "ui/message_center/notification_types.h"
 
 namespace message_center {
 
 namespace {
 
 bool ShouldShowNotificationAsPopup(
     const Notification& notification,
     const NotificationBlockers& blockers) {
-  for (const auto& blocker : blockers) {
+  for (auto* blocker : blockers) {
     if (!blocker->ShouldShowNotificationAsPopup(notification))
       return false;
   }
   return true;
 }
 
 }  // namespace
 
 bool ComparePriorityTimestampSerial::operator()(Notification* n1,
                                                 Notification* n2) {
@@ skipping 295 matching lines @@
     notification->set_shown_as_popup(message_center_->IsMessageCenterVisible()
                                      || quiet_mode_
                                      || notification->shown_as_popup());
   }
   // Take ownership. The notification can only be removed from the list
   // in EraseNotification(), which will delete it.
   notifications_.insert(std::move(notification));
 }
 
 }  // namespace message_center