[NTP Snippets] Hook up background fetching scheduler to UserClassifier

chrome/browser/ntp_snippets/content_suggestions_service_factory.cc

Index: chrome/browser/ntp_snippets/content_suggestions_service_factory.cc
diff --git a/chrome/browser/ntp_snippets/content_suggestions_service_factory.cc b/chrome/browser/ntp_snippets/content_suggestions_service_factory.cc
index 669e306d27180466e07a1d417946046f1c85868a..998ff6b8d46b8c2d10e30694e2dcec0b5b993e4d 100644
--- a/chrome/browser/ntp_snippets/content_suggestions_service_factory.cc
+++ b/chrome/browser/ntp_snippets/content_suggestions_service_factory.cc
@@ -150,7 +150,8 @@ void RegisterArticleProvider(SigninManagerBase* signin_manager,
       chrome::GetChannel() == version_info::Channel::STABLE;
   auto provider = base::MakeUnique<NTPSnippetsService>(
       service, service->category_factory(), pref_service, suggestions_service,
-      g_browser_process->GetApplicationLocale(), scheduler,
+      g_browser_process->GetApplicationLocale(), service->user_classifier(),
+      scheduler,
       base::MakeUnique<NTPSnippetsFetcher>(
           signin_manager, token_service, request_context, pref_service,
           category_factory, base::Bind(&safe_json::SafeJsonParser::Parse),