Makes the OfflinePageBridge.getAllPages method asynchronous.

components/offline_pages/offline_page_model.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_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_H_
 #define COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 147 matching lines @@
   // accessed. Its access info, including last access time and access count,
   // will be updated. Requires that the model is loaded.
   void MarkPageAccessed(int64_t bookmark_id);
 
   // Marks that the offline page related to the passed |bookmark_id| was going
   // to be deleted. The deletion will occur in a short while. The undo can be
   // done before this. Requires that the model is loaded.
   void MarkPageForDeletion(int64_t bookmark_id,
                            const DeletePageCallback& callback);
 
-  // Deletes an offline page related to the passed |bookmark_id|. Requires that
-  // the model is loaded.
-  void DeletePageByBookmarkId(int64_t bookmark_id,
-                              const DeletePageCallback& callback);
-
   // Deletes offline pages related to the passed |bookmark_ids|. Requires that
   // the model is loaded.
   void DeletePagesByBookmarkId(const std::vector<int64_t>& bookmark_ids,
                                const DeletePageCallback& callback);
 
   // Wipes out all the data by deleting all saved files and clearing the store.
   void ClearAll(const base::Closure& callback);
 
   // Returns true if there're offline pages.
   bool HasOfflinePages() const;
@@ skipping 139 matching lines @@
       scoped_observer_;
 
   base::WeakPtrFactory<OfflinePageModel> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OfflinePageModel);
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_H_