provide static popular sites for first run

components/ntp_tiles/most_visited_sites.cc

Index: components/ntp_tiles/most_visited_sites.cc
diff --git a/components/ntp_tiles/most_visited_sites.cc b/components/ntp_tiles/most_visited_sites.cc
index 6df20e31c89d74107da78ad0a2a868b7dd370476..d534ee1505f769d3411f4203b0d3266d9cae28e3 100644
--- a/components/ntp_tiles/most_visited_sites.cc
+++ b/components/ntp_tiles/most_visited_sites.cc
@@ -417,9 +417,6 @@ void MostVisitedSites::OnPopularSitesDownloaded(bool success) {
     LOG(WARNING) << "Download of popular sites failed";
     return;
   }
-
-  // Re-build the tile list. Once done, this will notify the observer.
-  BuildCurrentTiles();
 }
 
 void MostVisitedSites::OnIconMadeAvailable(const GURL& site_url,