Add support to process favicons from Web Manifests

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>
 
 #include "base/macros.h"
+#include "base/optional.h"
 #include "components/favicon/core/favicon_driver.h"
 #include "components/favicon/core/favicon_handler.h"
 
 class GURL;
 namespace bookmarks {
 class BookmarkModel;
 }
 
 
 namespace history {
@@ skipping 30 matching lines @@
                     history::HistoryService* history_service,
                     bookmarks::BookmarkModel* bookmark_model);
   ~FaviconDriverImpl() override;
 
   // Informs FaviconService that the favicon for |url| is out of date.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);
+  void OnUpdateCandidates(const GURL& page_url,
+                          const std::vector<FaviconURL>& candidates,
+                          const base::Optional<GURL>& manifest_url);
 
  protected:
   history::HistoryService* history_service() { return history_service_; }
 
   FaviconService* favicon_service() { return favicon_service_; }
 
  private:
   // KeyedServices used by FaviconDriverImpl. They may be null during testing,
   // but if they are defined, they must outlive the FaviconDriverImpl.
   FaviconService* favicon_service_;
   history::HistoryService* history_service_;
   bookmarks::BookmarkModel* bookmark_model_;
 
   // FaviconHandlers used to download the different kind of favicons.
   // |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_