Prepare to abstract PersistedData by making it part of the configurator.

components/update_client/update_engine.cc

 // Copyright 2015 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 "components/update_client/update_engine.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 40 matching lines @@
 UpdateEngine::UpdateEngine(
     const scoped_refptr<Configurator>& config,
     UpdateChecker::Factory update_checker_factory,
     CrxDownloader::Factory crx_downloader_factory,
     PingManager* ping_manager,
     const NotifyObserversCallback& notify_observers_callback)
     : config_(config),
       update_checker_factory_(update_checker_factory),
       crx_downloader_factory_(crx_downloader_factory),
       ping_manager_(ping_manager),
-      metadata_(new PersistedData(config->GetPrefService())),
       notify_observers_callback_(notify_observers_callback) {}
 
 UpdateEngine::~UpdateEngine() {
   DCHECK(thread_checker_.CalledOnValidThread());
 }
 
 void UpdateEngine::Update(
     bool is_foreground,
     const std::vector<std::string>& ids,
     const UpdateClient::CrxDataCallback& crx_data_callback,
@@ skipping 73 matching lines @@
       FROM_HERE,
       base::Bind(&UpdateEngine::DoUpdateCheck, base::Unretained(this), it));
 }
 
 void UpdateEngine::DoUpdateCheck(const UpdateContextIterator& it) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   auto& update_context = *it;
   DCHECK(update_context);
 
-  update_context->update_checker =
-      update_checker_factory_(config_, metadata_.get());
+  update_context->update_checker = update_checker_factory_(config_);
 
   update_context->update_checker->CheckForUpdates(
       update_context->ids, update_context->components,
       config_->ExtraRequestParams(), update_context->enabled_component_updates,
       base::Bind(&UpdateEngine::UpdateCheckDone, base::Unretained(this), it));
 }
 
 void UpdateEngine::UpdateCheckDone(const UpdateContextIterator& it,
                                    int error,
                                    int retry_after_sec) {
@@ skipping 194 matching lines @@
   component->Uninstall(version, reason);
 
   update_context->component_queue.push(id);
 
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
       base::Bind(&UpdateEngine::HandleComponent, base::Unretained(this), it));
 }
 
 }  // namespace update_client