Convert SupervisedUserResourceThrottle to a NavigationThrottle.

chrome/browser/ntp_tiles/chrome_most_visited_sites_factory.cc

 // Copyright 2013 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/ntp_tiles/chrome_most_visited_sites_factory.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 56 matching lines @@
   } else {
     DCHECK(supervisor_observer_);
   }
 
   supervisor_observer_ = new_observer;
 }
 
 bool SupervisorBridge::IsBlocked(const GURL& url) {
   SupervisedUserService* supervised_user_service =
       SupervisedUserServiceFactory::GetForProfile(profile_);
-  auto* url_filter = supervised_user_service->GetURLFilterForUIThread();
+  auto* url_filter = supervised_user_service->GetURLFilter();
   return url_filter->GetFilteringBehaviorForURL(url) ==
          SupervisedUserURLFilter::FilteringBehavior::BLOCK;
 }
 
 std::vector<ntp_tiles::MostVisitedSitesSupervisor::Whitelist>
 SupervisorBridge::whitelists() {
   std::vector<MostVisitedSitesSupervisor::Whitelist> results;
   SupervisedUserService* supervised_user_service =
       SupervisedUserServiceFactory::GetForProfile(profile_);
   for (const auto& whitelist : supervised_user_service->whitelists()) {
@@ skipping 34 matching lines @@
       nullptr,
 #endif
       base::MakeUnique<ntp_tiles::IconCacherImpl>(
           FaviconServiceFactory::GetForProfile(
               profile, ServiceAccessType::IMPLICIT_ACCESS),
           base::MakeUnique<image_fetcher::ImageFetcherImpl>(
               base::MakeUnique<suggestions::ImageDecoderImpl>(),
               profile->GetRequestContext())),
       base::MakeUnique<SupervisorBridge>(profile));
 }