Remove usage of DomDistillerService in ReadingListDownloadService.

ios/chrome/browser/reading_list/reading_list_download_service.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 "ios/chrome/browser/reading_list/reading_list_download_service.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/files/file_enumerator.h"
@@ skipping 24 matching lines @@
 // Number of time the download must fail before the download occurs only in
 // wifi.
 const int kNumberOfFailsBeforeWifiOnly = 5;
 // Number of time the download must fail before we give up trying to download
 // it.
 const int kNumberOfFailsBeforeStop = 7;
 }  // namespace
 
 ReadingListDownloadService::ReadingListDownloadService(
     ReadingListModel* reading_list_model,
-    dom_distiller::DomDistillerService* distiller_service,
     PrefService* prefs,
     base::FilePath chrome_profile_path,
     net::URLRequestContextGetter* url_request_context_getter,
+    std::unique_ptr<dom_distiller::DistillerFactory> distiller_factory,
     std::unique_ptr<reading_list::ReadingListDistillerPageFactory>
         distiller_page_factory)
     : reading_list_model_(reading_list_model),
       chrome_profile_path_(chrome_profile_path),
       had_connection_(!net::NetworkChangeNotifier::IsOffline()),
       distiller_page_factory_(std::move(distiller_page_factory)),
+      distiller_factory_(std::move(distiller_factory)),
       weak_ptr_factory_(this) {
   DCHECK(reading_list_model);
 
   url_downloader_ = base::MakeUnique<URLDownloader>(
-      distiller_service, distiller_page_factory_.get(), prefs,
+      distiller_factory_.get(), distiller_page_factory_.get(), prefs,
       chrome_profile_path, url_request_context_getter,
       base::Bind(&ReadingListDownloadService::OnDownloadEnd,
                  base::Unretained(this)),
       base::Bind(&ReadingListDownloadService::OnDeleteEnd,
                  base::Unretained(this)));
   net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
 }
 
 ReadingListDownloadService::~ReadingListDownloadService() {
   net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
@@ skipping 217 matching lines @@
     for (auto& url : url_to_download_cellular_) {
       ScheduleDownloadEntry(url);
     }
   }
   if (type == net::NetworkChangeNotifier::CONNECTION_WIFI) {
     for (auto& url : url_to_download_wifi_) {
       ScheduleDownloadEntry(url);
     }
   }
 }