Find Favicon in priority of icon_type.

chrome/browser/history/history_service.cc

 // Copyright (c) 2012 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.
 
 // The history system runs on a background thread so that potentially slow
 // database operations don't delay the browser. This backend processing is
 // represented by HistoryBackend. The HistoryService's job is to dispatch to
 // that thread.
 //
 // Main thread                       History thread
@@ skipping 603 matching lines @@
                  icon_urls,
                  icon_types,
                  desired_size_in_dip,
                  desired_scale_factors,
                  results),
       base::Bind(&RunWithFaviconResults, callback, base::Owned(results)));
 }
 
 CancelableTaskTracker::TaskId HistoryService::GetFaviconsForURL(
     const GURL& page_url,
-    int icon_types,
+    const std::vector<int>& icon_types_priority,
     int desired_size_in_dip,
     const std::vector<ui::ScaleFactor>& desired_scale_factors,
+    int threshold_for_next_icon_types,
     const FaviconService::FaviconResultsCallback& callback,
     CancelableTaskTracker* tracker) {
   DCHECK(thread_checker_.CalledOnValidThread());
   LoadBackendIfNecessary();
 
   std::vector<chrome::FaviconBitmapResult>* results =
       new std::vector<chrome::FaviconBitmapResult>();
   return tracker->PostTaskAndReply(
       thread_->message_loop_proxy().get(),
       FROM_HERE,
       base::Bind(&HistoryBackend::GetFaviconsForURL,
                  history_backend_.get(),
                  page_url,
-                 icon_types,
+                 icon_types_priority,
                  desired_size_in_dip,
                  desired_scale_factors,
+                 threshold_for_next_icon_types,
                  results),
       base::Bind(&RunWithFaviconResults, callback, base::Owned(results)));
 }
 
 CancelableTaskTracker::TaskId HistoryService::GetFaviconForID(
     chrome::FaviconID favicon_id,
     int desired_size_in_dip,
     ui::ScaleFactor desired_scale_factor,
     const FaviconService::FaviconResultsCallback& callback,
     CancelableTaskTracker* tracker) {
@@ skipping 588 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   visit_database_observers_.RemoveObserver(observer);
 }
 
 void HistoryService::NotifyVisitDBObserversOnAddVisit(
     const history::BriefVisitInfo& info) {
   DCHECK(thread_checker_.CalledOnValidThread());
   FOR_EACH_OBSERVER(history::VisitDatabaseObserver, visit_database_observers_,
                     OnAddVisit(info));
 }