[Offline Pages] Removes two-step expiration related.

chrome/browser/android/offline_pages/offline_page_bookmark_observer.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 CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_BOOKMARK_OBSERVER_H_
 #define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_BOOKMARK_OBSERVER_H_
 
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/android/offline_pages/offline_page_model_factory.h"
 #include "components/bookmarks/browser/base_bookmark_model_observer.h"
@@ skipping 20 matching lines @@
 
   // Implement bookmarks::OfflinePageBookmarkObserver
   void BookmarkModelChanged() override;
   void BookmarkNodeRemoved(bookmarks::BookmarkModel* model,
                            const bookmarks::BookmarkNode* parent,
                            int old_index,
                            const bookmarks::BookmarkNode* node,
                            const std::set<GURL>& removed_urls) override;
 
  private:
-  // Does work for actual expiring.
-  void DoExpireRemovedBookmarkPages(const MultipleOfflineIdResult& offline_ids);
+  // Does work for actual deleting removed bookmark pages.
+  void DoDeleteRemovedBookmarkPages(const MultipleOfflineIdResult& offline_ids);
 
-  // Callback for expiring removed bookmark pages.
-  void OnExpireRemovedBookmarkPagesDone(bool result);
+  // Callback for deleting removed bookmark pages.
+  void OnDeleteRemovedBookmarkPagesDone(DeletePageResult result);
 
   content::BrowserContext* context_;
 
   OfflinePageModel* offline_page_model_;
 
   base::WeakPtrFactory<OfflinePageBookmarkObserver> weak_ptr_factory_;
 };
 }  // namespace offline_pages
 
 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_BOOKMARK_OBSERVER_H_