Make GetBestPageForOnlineURL async

components/offline_pages/offline_page_model_impl.h

 // 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.
 
 #ifndef COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_IMPL_H_
 #define COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_IMPL_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 83 matching lines @@
   const OfflinePageItem* MaybeGetPageByOfflineId(
       int64_t offline_id) const override;
   void GetPageByOfflineURL(
       const GURL& offline_url,
       const SingleOfflinePageItemCallback& callback) override;
   const OfflinePageItem* MaybeGetPageByOfflineURL(
       const GURL& offline_url) const override;
   void GetPagesByOnlineURL(
       const GURL& online_url,
       const MultipleOfflinePageItemCallback& callback) override;
-  void GetBestPageForOnlineURL(
-      const GURL& online_url,
-      const SingleOfflinePageItemCallback callback) override;
   const OfflinePageItem* MaybeGetBestPageForOnlineURL(
       const GURL& online_url) const override;
   void CheckMetadataConsistency() override;
   void ExpirePages(const std::vector<int64_t>& offline_ids,
                    const base::Time& expiration_time,
                    const base::Callback<void(bool)>& callback) override;
   ClientPolicyController* GetPolicyController() override;
 
   // Methods for testing only:
   OfflinePageMetadataStore* GetStoreForTesting();
@@ skipping 33 matching lines @@
       const MultipleOfflineIdCallback& callback) const;
   void GetPageByOfflineIdWhenLoadDone(
       int64_t offline_id,
       const SingleOfflinePageItemCallback& callback) const;
   void GetPagesByOnlineURLWhenLoadDone(
       const GURL& offline_url,
       const MultipleOfflinePageItemCallback& callback) const;
   void GetPageByOfflineURLWhenLoadDone(
       const GURL& offline_url,
       const SingleOfflinePageItemCallback& callback) const;
-  void GetBestPageForOnlineURLWhenLoadDone(
-      const GURL& online_url,
-      const SingleOfflinePageItemCallback& callback) const;
   void MarkPageAccessedWhenLoadDone(int64_t offline_id);
   void CheckMetadataConsistencyWhenLoadDone();
 
   // Callback for checking whether we have offline pages.
   void HasPagesAfterLoadDone(const std::string& name_space,
                              const HasPagesCallback& callback) const;
 
   // Callback for loading pages from the offline page metadata store.
   void OnLoadDone(const base::TimeTicks& start_time,
                   OfflinePageMetadataStore::LoadStatus load_status,
@@ skipping 127 matching lines @@
   OfflinePageModelEventLogger offline_event_logger_;
 
   base::WeakPtrFactory<OfflinePageModelImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OfflinePageModelImpl);
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_IMPL_H_