[LargeIconService] Make check_seen param optional for fetching

components/ntp_tiles/icon_cacher_impl.cc

 // Copyright 2016 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 "components/ntp_tiles/icon_cacher_impl.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 201 matching lines @@
   if (!HasResultDefaultBackgroundColor(result)) {
     // We should only fetch for default "gray" tiles so that we never overrite
     // any favicon of any size.
     FinishRequestAndNotifyIconAvailable(page_url, /*newly_available=*/false);
     return;
   }
 
   large_icon_service_
       ->GetLargeIconOrFallbackStyleFromGoogleServerSkippingLocalCache(
           page_url, kTileIconMinSizePx, kTileIconDesiredSizePx,
+          /*may_page_url_be_private=*/true,
           base::Bind(&IconCacherImpl::OnMostLikelyFaviconDownloaded,
                      weak_ptr_factory_.GetWeakPtr(), page_url));
 }
 
 void IconCacherImpl::OnMostLikelyFaviconDownloaded(const GURL& request_url,
                                                    bool success) {
   UMA_HISTOGRAM_BOOLEAN("NewTabPage.TileFaviconFetchSuccess.Server", success);
   FinishRequestAndNotifyIconAvailable(request_url, success);
 }
 
@@ skipping 14 matching lines @@
     return;
   }
   for (const base::Closure& callback : callbacks) {
     if (callback) {
       callback.Run();
     }
   }
 }
 
 }  // namespace ntp_tiles