Remove all remaining traces of MessageLoopProxy.

chrome/browser/history/top_sites_factory.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 "chrome/browser/history/top_sites_factory.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 86 matching lines @@
 // static
 scoped_refptr<history::TopSites> TopSitesFactory::BuildTopSites(
     content::BrowserContext* context,
     const std::vector<history::PrepopulatedPage>& prepopulated_page_list) {
   Profile* profile = Profile::FromBrowserContext(context);
   scoped_refptr<history::TopSitesImpl> top_sites(new history::TopSitesImpl(
       profile->GetPrefs(), HistoryServiceFactory::GetForProfile(
                                profile, ServiceAccessType::EXPLICIT_ACCESS),
       prepopulated_page_list, base::Bind(CanAddURLToHistory)));
   top_sites->Init(context->GetPath().Append(history::kTopSitesFilename),
-                  content::BrowserThread::GetMessageLoopProxyForThread(
+                  content::BrowserThread::GetTaskRunnerForThread(
                       content::BrowserThread::DB));
   return top_sites;
 }
 
 TopSitesFactory::TopSitesFactory()
     : RefcountedBrowserContextKeyedServiceFactory(
           "TopSites",
           BrowserContextDependencyManager::GetInstance()) {
   DependsOn(HistoryServiceFactory::GetInstance());
 }
 
 TopSitesFactory::~TopSitesFactory() {
 }
 
 scoped_refptr<RefcountedKeyedService> TopSitesFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
   history::PrepopulatedPageList prepopulated_pages;
   InitializePrepopulatedPageList(&prepopulated_pages);
   return BuildTopSites(context, prepopulated_pages);
 }
 
 void TopSitesFactory::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   history::TopSitesImpl::RegisterPrefs(registry);
 }
 
 bool TopSitesFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }