Remove Notification::small_image_url_ as it has no users.

chrome/browser/notifications/message_center_notification_manager.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 "chrome/browser/notifications/message_center_notification_manager.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
@@ skipping 390 matching lines @@
   // Set the image directly if we have it.
   if (image && !image->IsEmpty()) {
     callback.Run(*image);
     return;
   }
 
   // Leave the image null if there's no URL.
   if (url.is_empty())
     return;
 
-  content::WebContents* contents = notification.GetWebContents();
+  content::WebContents* contents = notification.delegate()->GetWebContents();
   if (!contents) {
     LOG(WARNING) << "Notification needs an image but has no WebContents";
     return;
   }
 
   AddPendingDownload();
 
   contents->DownloadImage(
       url,
       false,  // Not a favicon
@@ skipping 50 matching lines @@
 
 MessageCenterNotificationManager::ProfileNotification::~ProfileNotification() {
 }
 
 void MessageCenterNotificationManager::ProfileNotification::StartDownloads() {
   downloads_->StartDownloads(notification_);
 }
 
 void
 MessageCenterNotificationManager::ProfileNotification::OnDownloadsCompleted() {
-  notification_.DoneRendering();
+  notification_.delegate()->ReleaseRenderViewHost();
 }
 
 void
 MessageCenterNotificationManager::ProfileNotification::AddToAlternateProvider(
     const std::string extension_id) {
   // Convert data from Notification type to NotificationOptions type.
   extensions::api::notifications::NotificationOptions options;
   NotificationConversionHelper::NotificationToNotificationOptions(notification_,
                                                                   &options);
 
@@ skipping 47 matching lines @@
        it != registry->enabled_extensions().end();
        ++it) {
     if ((*it->get()).permissions_data()->HasAPIPermission(
             extensions::APIPermission::ID::kNotificationProvider)) {
       extension_id = (*it->get()).id();
       return extension_id;
     }
   }
   return extension_id;
 }