Move WasUnableToDownload logic to FaviconHandler

components/favicon/core/favicon_driver_impl.h

 // Copyright 2015 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.
 
 #ifndef COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_IMPL_H_
 #define COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_IMPL_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 35 matching lines @@
   // Returns whether the driver is waiting for a download to complete or for
   // data from the FaviconService. Reserved for testing.
   bool HasPendingTasksForTest();
 
  protected:
   FaviconDriverImpl(FaviconService* favicon_service,
                     history::HistoryService* history_service,
                     bookmarks::BookmarkModel* bookmark_model);
   ~FaviconDriverImpl() override;
 
-  // Returns whether downloading favicon for |url| previously failed.
-  bool WasUnableToDownloadFavicon(const GURL& url);
-
   // Informs FaviconService that the favicon for |url| is out of date. If
   // |force_reload| is true, then discard information about favicon download
   // failures.
   void SetFaviconOutOfDateForPage(const GURL& url, bool force_reload);
 
   // Broadcasts new favicon URL candidates to FaviconHandlers.
   void OnUpdateFaviconURL(const GURL& page_url,
                           const std::vector<FaviconURL>& candidates);
 
  protected:
@@ skipping 12 matching lines @@
   // |touch_icon_handler_| may be null depending on the platform and variations.
   std::unique_ptr<FaviconHandler> favicon_handler_;
   std::unique_ptr<FaviconHandler> touch_icon_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(FaviconDriverImpl);
 };
 
 }  // namespace favicon
 
 #endif  // COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_IMPL_H_