[Offline Pages] Removes two-step expiration related.

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 <memory>
@@ skipping 137 matching lines @@
 
   // Returns via callback all GURLs in |urls| that are equal to the online URL
   // of any offline page.
   virtual void CheckPagesExistOffline(
       const std::set<GURL>& urls,
       const CheckPagesExistOfflineCallback& callback) = 0;
 
   // Gets all offline pages.
   virtual void GetAllPages(const MultipleOfflinePageItemCallback& callback) = 0;
 
-  // Gets all offline pages including expired ones.
-  virtual void GetAllPagesWithExpired(
-      const MultipleOfflinePageItemCallback& callback) = 0;
-
   // Gets all offline ids where the offline page has the matching client id.
   virtual void GetOfflineIdsForClientId(
       const ClientId& client_id,
       const MultipleOfflineIdCallback& callback) = 0;
 
   // Returns zero or one offline pages associated with a specified |offline_id|.
   virtual void GetPageByOfflineId(
       int64_t offline_id,
       const SingleOfflinePageItemCallback& callback) = 0;
 
   // Returns the offline pages that are related to |url|. |url_search_mode|
   // controls how the url match is done. See URLSearchMode for more details.
   virtual void GetPagesByURL(
       const GURL& url,
       URLSearchMode url_search_mode,
       const MultipleOfflinePageItemCallback& callback) = 0;
 
-  // Marks pages with |offline_ids| as expired and deletes the associated
-  // archive files.
-  virtual void ExpirePages(const std::vector<int64_t>& offline_ids,
-                           const base::Time& expiration_time,
-                           const base::Callback<void(bool)>& callback) = 0;
-
   // Returns the policy controller.
   virtual ClientPolicyController* GetPolicyController() = 0;
 
   // TODO(dougarnett): Remove this and its uses.
   virtual bool is_loaded() const = 0;
 
   // Returns the logger. Ownership is retained by the model.
   virtual OfflineEventLogger* GetLogger() = 0;
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_H_