Convert SupervisedUserResourceThrottle to a NavigationThrottle.

chrome/browser/ntp_tiles/chrome_most_visited_sites_factory.cc

Index: chrome/browser/ntp_tiles/chrome_most_visited_sites_factory.cc
diff --git a/chrome/browser/ntp_tiles/chrome_most_visited_sites_factory.cc b/chrome/browser/ntp_tiles/chrome_most_visited_sites_factory.cc
index 9e01881bac2886db534157344387149312ba8fb2..01ebd602a2c4d7a2368a41267951a3fe147abce1 100644
--- a/chrome/browser/ntp_tiles/chrome_most_visited_sites_factory.cc
+++ b/chrome/browser/ntp_tiles/chrome_most_visited_sites_factory.cc
@@ -74,7 +74,7 @@ void SupervisorBridge::SetObserver(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;
 }