Remove all remaining traces of MessageLoopProxy.

chrome/browser/safe_browsing/safe_browsing_service.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/safe_browsing/safe_browsing_service.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 141 matching lines @@
   std::unique_ptr<net::ChannelIDService> channel_id_service_;
   std::unique_ptr<net::HttpNetworkSession> http_network_session_;
   std::unique_ptr<net::HttpTransactionFactory> http_transaction_factory_;
 };
 
 SafeBrowsingURLRequestContextGetter::SafeBrowsingURLRequestContextGetter(
     scoped_refptr<net::URLRequestContextGetter> system_context_getter)
     : shut_down_(false),
       system_context_getter_(system_context_getter),
       network_task_runner_(
-          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)) {}
+          BrowserThread::GetTaskRunnerForThread(BrowserThread::IO)) {}
 
 net::URLRequestContext*
 SafeBrowsingURLRequestContextGetter::GetURLRequestContext() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   // Check if the service has been shut down.
   if (shut_down_)
     return nullptr;
 
   if (!safe_browsing_request_context_) {
@@ skipping 522 matching lines @@
     ping_manager()->ReportThreatDetails(report);
 }
 
 void SafeBrowsingService::ProcessResourceRequest(
     const ResourceRequestInfo& request) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   services_delegate_->ProcessResourceRequest(&request);
 }
 
 }  // namespace safe_browsing