Extend LargeIconService to fetch missing favicons from a Google server

components/history/core/browser/history_service.cc

Index: components/history/core/browser/history_service.cc
diff --git a/components/history/core/browser/history_service.cc b/components/history/core/browser/history_service.cc
index b154b3237e19b1373d1c0ba522aefc8229a51861..86948b971861849e117815bc5306d9382eb63ab8 100644
--- a/components/history/core/browser/history_service.cc
+++ b/components/history/core/browser/history_service.cc
@@ -620,9 +620,26 @@ void HistoryService::SetFavicons(const GURL& page_url,
   if (history_client_ && !history_client_->CanAddURL(page_url))
     return;
 
-  ScheduleTask(PRIORITY_NORMAL,
-               base::Bind(&HistoryBackend::SetFavicons, history_backend_,
-                          page_url, icon_type, icon_url, bitmaps));
+  ScheduleTask(
+      PRIORITY_NORMAL,
+      base::Bind(base::IgnoreResult(&HistoryBackend::SetFavicons),
+                 history_backend_, page_url, icon_type, icon_url, bitmaps));
+}
+
+void HistoryService::SetExpiredFaviconsIfNoneKnown(
+    const GURL& page_url,
+    favicon_base::IconType icon_type,
+    const GURL& icon_url,
+    const std::vector<SkBitmap>& bitmaps) {
+  DCHECK(backend_task_runner_) << "History service being called after cleanup";
+  DCHECK(thread_checker_.CalledOnValidThread());
+  if (history_client_ && !history_client_->CanAddURL(page_url))
+    return;
+
+  ScheduleTask(
+      PRIORITY_NORMAL,
+      base::Bind(&HistoryBackend::SetExpiredFaviconsIfNoneKnown,
+                 history_backend_, page_url, icon_type, icon_url, bitmaps));
 }
 
 void HistoryService::SetFaviconsOutOfDateForPage(const GURL& page_url) {