Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

chrome/browser/notifications/message_center_settings_controller.cc

 // Copyright (c) 2013 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 "chrome/browser/notifications/message_center_settings_controller.h"
 
 #include <algorithm>
 
 #include "base/i18n/string_compare.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 70 matching lines @@
   const ExtensionSet* extension_set = extension_service->extensions();
   // The extension icon size has to be 32x32 at least to load bigger icons if
   // the icon doesn't exist for the specified size, and in that case it falls
   // back to the default icon. The fetched icon will be resized in the settings
   // dialog. See chrome/browser/extensions/extension_icon_image.cc and
   // crbug.com/222931
   app_icon_loader_.reset(new extensions::AppIconLoaderImpl(
       profile, extension_misc::EXTENSION_ICON_SMALL, this));
   for (ExtensionSet::const_iterator iter = extension_set->begin();
        iter != extension_set->end(); ++iter) {
-    const extensions::Extension* extension = *iter;
+    const extensions::Extension* extension = iter->get();
     if (!extension->HasAPIPermission(
-      extensions::APIPermission::kNotification)) {
+            extensions::APIPermission::kNotification)) {
       continue;
     }
 
     notifiers->push_back(new message_center::Notifier(
         extension->id(),
         UTF8ToUTF16(extension->name()),
         notification_service->IsExtensionEnabled(extension->id())));
     app_icon_loader_->FetchImage(extension->id());
   }
   if (comparator)
@@ skipping 122 matching lines @@
   delegate_->UpdateFavicon(url, favicon_result.image);
 }
 
 
 void MessageCenterSettingsController::SetAppImage(const std::string& id,
                                                   const gfx::ImageSkia& image) {
   if (!delegate_)
     return;
   delegate_->UpdateIconImage(id, gfx::Image(image) );
 }